Miasmata is a first-person survival/adventure game, developed from the ground-up by brothers Joe and Bob Johnson. You play as Robert Hughes, a plague-stricken scientist on a journey to discover a cure. Your adventure begins on the shores of a remote and mysterious island.
Análisis de usuarios: Muy positivos (549 análisis)
Fecha de lanzamiento: 28 de nov. 2012

Inicia sesión para añadir este artículo a tu lista de deseados, seguirlo o marcarlo como que no estás interesado.

Comprar Miasmata


Recomendado por mentores

"Miasmata's horror sneaks up on you. Both through its story and its dynamic gameplay. The game can be just as wonderful as it is dreadful."

Steam Greenlight

Acerca de este juego

Miasmata is a first-person survival/adventure game, developed from the ground-up by brothers Joe and Bob Johnson. You play as Robert Hughes, a plague-stricken scientist on a journey to discover a cure. Your adventure begins on the shores of a remote and mysterious island. Long ago, the island was inhabited by a group of indigenous people, whose extant monuments still decorate the island landscape. The island is now home to a scientific research outpost and it is your hope to reunite with your colleagues working there. Unfortunately, you'll soon discover that something has gone terribly wrong.

During your adventure, you will encounter a mysterious and deadly creature. This creature can stalk you for miles, lurking behind grasses and vegetative cover. By treading carefully and with stealth, you may be able to elude the creature. If you are careless, however, you will be forced to confront the creature head-on.

Key Features

  • Experience: An engine built from the ground up, featuring voxel-based volumetric clouds, advanced water reflection and refraction, volumetric light-shafts and atmospheric scattering simulations.
  • Explore: A lush and incredibly detailed natural world. The island landscape is covered by forests with lush canopies. The terrain surfaces are blanketed by tufts of moss and grass. The forest floors have thick undergrowth and are littered with fallen leaves, rotting logs, stumps and sticks.
  • Discover: Dozens of camps, outposts and ruins. Find maps, notes and clues that lead you on your adventure.
  • Survive: A deadly world. Discover plants and fungi and synthesize them into life-saving medicines. Find water and shelter to stave off fever, dehydration and exhaustion. Use stealth and cunning to escape the deadly creature.
  • Create: A map of the island using an innovative cartography mechanic. Use a true-to-life triangulation system to pinpoint your location on the island and construct a map of the its boundaries, contours and landmarks.

Requisitos del sistema


    • OS:Windows XP, Vista, 7
    • Processor: Intel Core2 Duo, AMD Athlon64 x2, or better
    • Memory:2 GB RAM
    • Graphics:NVidia Geforce 8600GT, ATI Radeon 3670HD or equivalent
    • DirectX®:9.0
    • Hard Drive:3 GB HD space
    • Sound:DirectX compatible sound card


    • OS:Windows XP, Vista, 7
    • Processor:Intel Core i5/i7, AMD equivalent or better
    • Memory:4 GB RAM
    • Graphics:Nvidia GeForce GTX 280, ATI Radeon 4870 or better
    • DirectX®:11
    • Hard Drive:3 GB HD space
    • Sound:DirectX compatible sound card
Análisis útiles de usuarios
A 27 de 29 personas (93%) les ha sido útil este análisis
1 persona ha encontrado divertido este análisis
11.8 h registradas
Publicado: 19 de diciembre de 2014
Seriously one of the most profoundly underrated games I have ever played.

Things Miasmata did that were totally amazing and have not been properly replicated before or since:

*A completely original exploration based gameplay concept from the triangulation mapping
*A sense of maintained suspense and horror thanks to the complete unpredictability of the monster that can show up at any time or not show up for hours as you explore.
*A player character that feels legitimately weak and frail when injured. Your injuries and dehydration make the character more difficult to control and more prone to tripping and falling. Your characters momentum will frequently send you careening off cliffs in a panic unable to stop yourself in time, especially when running from the aforementioned monster.

It is a good game.
¿Te ha sido útil este análisis? No Divertido
A 6 de 8 personas (75%) les ha sido útil este análisis
35.4 h registradas
Publicado: 31 de diciembre de 2014
Miasmata is an "exploration" game, you wake up on an island and have to find plants to create an cure for the disease you're suffering from. You have to wander through the forests, spot and collect plants, then carry them back to somewhere you can identify them and their effects.
You are also chased by "something" during all this, but I won't tell more about it here ;)

What makes the essence of that game is the Cartography Mechanic. Basically, you'll have to build your map on your own, not to get lost. To reveal the map, you have to stand at a particular spot and aim with your compass to 2 known objects (houses / statues / ruins) that you know, so you'll be able to triangulate your position and reveal the map.
Then, the "how to get in the forest without being lost" will make your brain cells works.

The graphics are beautiful, every tree has been "hand-placed" by the two developpers (they have made the entire game, including the physics engine, on their own... that's incredible).

[Pros] :

+ Awesome graphics, really (but don't hope playing with a low-end GC), better than some AAA Games
+ The feeling of being "lost" on that Island ; this is the sole game where I really had the feeling that I was lost xD
+ A real "exploration game", where you're thrown in and don't know what to do at first
+ The Cartography mechanics, quite unique if you like it. It serves the "I am lost" feeling

[Cons] :

- English only, do not buy if you only speak your native language (other than English)
- Your character has soap under its feet (not actually, it's realistic, but too realistic xD)
~ The whole game relies on exploration, there is (almost) no ennemy (except the controls)
~ If you don't like the cartogrpahy system, you won't like that game

[Conclusion] : If you're ok with English, like exploration, wouldn't be bothered by a lack of ennemies, have a good GC and want to really feel "lost" in a game, give it a try ;) 8.5/10
¿Te ha sido útil este análisis? No Divertido
A 4 de 5 personas (80%) les ha sido útil este análisis
12.3 h registradas
Publicado: 23 de marzo
One of the richest exploration experiences I have gotten from a game. The triangulation cartography system is brilliant, and carelessness will get you lost (and probably killed). The main objective of the game -- find plants, synthesize medicines, cure the plague -- is entertaining, though sometimes I wished for a little more depth in the story and the mechanics.

This game made me wish that the developers had more funding, because they could have made a great game instead of a good game with a few very cool concepts. I think that feeling is a mark of how well they succeeded.
¿Te ha sido útil este análisis? No Divertido
A 4 de 6 personas (67%) les ha sido útil este análisis
7.0 h registradas
Publicado: 13 de marzo
Play Misamata if you like exploration and figuring things out for yourself.

I applaud the creators for crafting an immersive experience that many faster-paced mainstream games lack.

The focus here is on exploration, with elements of botany, map making and evading a prescence stalking you from the trees...

If you can forgive some poor textures (especially close up and at long draw distances) you'll find a simple but satisfying experience, best played in a quiet room, late at night.
¿Te ha sido útil este análisis? No Divertido
A 5 de 8 personas (63%) les ha sido útil este análisis
29.6 h registradas
Publicado: 3 de diciembre de 2014
Please do not let the technical flaws of this game (of which there are plenty) turn you away from it. If you're the kind of person who can allow yourself to get completely immersed into a virtual world, look past those flaws and give this world a try.

Yes, there are issues. The uphill/downhill momentum can at times feel a bit... overzealous. Graphical fidelity is all over the place - while the general environment and landscape looks beautiful from afar, certain ugly details are exposed given a close-up. Several Steam Achievements are broken. You should probably avoid Alt+Tabbing the game due to the dreaded "One Moment Please..." problem. Performance issues can bring the entire world to a complete standstill for several seconds at a time, and you'll eventually realize that the only thing that "no loading screens" really means is that loading can get you killed. As the game was made from scratch by a pair of brothers, this sort of stuff is to be expected. There is an unofficial community patch out there (along with other helpful game utilities), and I'd recommend that you check that out before taking things too far.

But to be perfectly honest, since I decided to give this game another try after a near-year-long hiatus taken shortly after the intro, I'm thankful that I didn't pass it up. As one of those aforementioned people who can immerse themselves in games quite easily, I found a tension in this game that few other games have ever made me feel. That moment when I'm standing on the porch of my safehouse, barren map in-hand, building up the courage to take my first step into the unknown. That moment when I've got my headphones cranked up, and I'm crouch-walking through the forest, eyes peeled, my heart stopping at the crunch of every twig. That moment when all hell has broken loose and I've gone into a full-on panic-sprint, knowing that my only chance at survival is to put myself at the complete mercy of the terrain and just run. Those moments are gaming gold.

Miasmata has a bit of a learning curve; anybody who has played it can attest to that. For all of the things that this game can give to you, there are just as many things that it will leave you to take for yourself. You'll struggle with movement. You'll struggle with cartography. You'll leave the house a bit too late one night and find yourself completely lost, hopeless, and staring death in the face. But give this game your time and your effort, and it will give you a completely unreplicated experience in return.

Save early, save often. Stay alert, stay alive. You've been warned!
¿Te ha sido útil este análisis? No Divertido
A 3 de 5 personas (60%) les ha sido útil este análisis
33.8 h registradas
Publicado: 8 de diciembre de 2014
I've enjoyed Miasmata. It took me a long time to play it, as I had the game for several years before I finished it. It was one of my "I have nothing to play... oh, wait, let's do something in this for a bit" games.

Miasmata utilizes a rather interesting mechanic: a triangulation process for mapping out the island and finding your location, which makes this game stand out a lot as I have not seen anything like it elsewhere. The AI for the monster is wonderful, as it seems to show up with enough frequency and has some great pathing and bahaviors, much like a real cat. The fact that it could show up at any time, especially when you are covering lots of ground quickly, adds to the tension and creates a great atmosphere. The snippets of story through notes create a chilling mystery set on a surpisingly beautiful island.

This game, if comparrisons are made, somewhat feels "slender-esque" as you are a plague victim scouring the island for plants to synthesize a cure, and medicines to keep you alive along the way. I feel like the monster shows up more as you get closer to completion of the cure and it seems to show up more in critical areas, such as places where X plant for the cure is guarenteed.

My only issue with the game revolved around the controls. The movement of the character can be wonky sometimes. I feel like it does a great job of simulating the rigors of climbing with sliding and exhaustion; however, there are many times I'd want to move a foot or so forward, maybe down a 2% grade, and the guy would either overstep or just take off running. Many a cliff have I fallen from due to this "over/undersensitivity." I've found that alternating between forward and backward as you walk down any slope can greatly reduce the threat of "tripping."

There are also times where you'd trip from one-foot drops, get stuck on stairs or small logs (which is terrible when you are being pursued), bump a tree the wrong way and bounce off sideways, be following a curved ledge and start sliding to the right. I just felt I, as a human being, would be able to have better control of my footing; the game makes me feel like a baby who has just learned how to walk, yet lacks basic control.

Other than movement mechanics, I have greatly enjoyed the game so far. I enjoy exploration games and find that the ability to triagulate on the map adds more to the exploration reward. Miasmata has just enough tension and "horror" to attract fans of those genres and manages to stay fresh, as the map is fairly well-sized, allowing for many hours of play.
¿Te ha sido útil este análisis? No Divertido
A 9 de 17 personas (53%) les ha sido útil este análisis
1 persona ha encontrado divertido este análisis
6.6 h registradas
Publicado: 11 de enero
While the I think the game has a fresh concept and new gameplay mechanics, there's two main problems to this game that keep me from truly liking this game and reccomendin it. One, actually moving around is awful as it feels like you're controlling a drunk person and not a diseased plague patient. I had too many occasions where I went from calmly walking down a hill to the beach and quickly progressed to rolling headfirst down the hill into the water, killing the pc. Secondly, the game is just so freaking boring. Once the initial fifteen minutes are up and you really look at this game, there's not a whole lot to it. You go from one campsite to the next, getting lost while holding flowers, and keeping an eye out for The Beast. When you first spawn, you'll be a bit wary of the enemy until you realize that you'll rarely (if ever) encounter it and evading it isn't very difficult. Out of the many playthroughs I've had, I only ran into The Beast once and all I did was wave a handfull of burning sticks at it and it ran away. I am a bit dissapointed because there's definitely potential here, but the lack of a general story, present threat, and weird gameplay bog the whole thing down. It's unfortunate that these reasons are enough to make me uninstall this game from my computer and move on to other games worth my time.
¿Te ha sido útil este análisis? No Divertido
A 2 de 4 personas (50%) les ha sido útil este análisis
24.2 h registradas
Publicado: 4 de enero
The creature adds a very small horror element of the game, but this is not a "survival horror" game. The emphasis is almost exclusively on survival and the sense of adventure (traveling to a new place and discovering new things). As someone who cares deeply about science and discovery, this game was very refreshing and engaging for me, despite its nagging technical and design issues.

I highly recommend that anyone with a similar passion for science, discovery, and adventure give Miasmata a try. It is very rough around the edges, but its dedication to its novel niche concept makes it worthwhile. It's a game that is geared towards a specific audience, and that audience will likely love the game. For anyone else, it could be a passable diversion, but you might find it too dull and boring to play to completion.

Full review on my personal blog:
¿Te ha sido útil este análisis? No Divertido
A 4 de 8 personas (50%) les ha sido útil este análisis
22.4 h registradas
Publicado: 9 de enero
I found this game to be relaxing, engaging, and at times, freaky. Aside from odd running/falling mechanics being frustrating at times (this is part of the challenge), the Miasmata was a lot of fun. If there were a sequel, I would be eager to play it.
¿Te ha sido útil este análisis? No Divertido
A 2 de 4 personas (50%) les ha sido útil este análisis
23.4 h registradas
Publicado: 14 de enero
A real gem that gives you a true sense of exploration. You spend most of the time exploring the island, looking for medical plants and creating a map using the cartography mechanics. Survival aspect is minimal. You constantly need fresh water, but it never was a problem for me. Can be very scary at times thanks to the Creature. If you just want a relaxing experience, there is a no-creature save file somewhere on the forums, but it would make the game far less challenging. Verdict: if you like the idea of gameplay based mostly on exploring a huge island, definitely buy Miasmata.
¿Te ha sido útil este análisis? No Divertido
A 1 de 2 personas (50%) les ha sido útil este análisis
3.3 h registradas
Publicado: 5 de abril
This is a great game. Great production went into it. BUT THIS IS NOT FOR EVERYONE

Sadly, I did not enjoy my stary. It just puts you on an island and you are on your own after that.
I could see some type of people who would enjoy it.

For me, it was somehow repetetive and boring. This is not my cup.
¿Te ha sido útil este análisis? No Divertido
A 1 de 2 personas (50%) les ha sido útil este análisis
9.3 h registradas
Publicado: 11 de abril
Beautiful setting with a really well done day/night cycle and dynamic weather. The core game mechanics are shallow and not as deep as I had anticipated going in, but the exploration aspects themselves are engrossing if you're the sort that just likes exploring beautiful game environments like I do. I did cheat and use a web map to get by, because while the in-game cartography starts off interesting, it got tedious fast for me. But overall, well worth the playthrough.
¿Te ha sido útil este análisis? No Divertido
A 26 de 28 personas (93%) les ha sido útil este análisis
1.4 h registradas
Publicado: 20 de enero de 2014
Sobrevive en la isla Eden.

Se trata de un juego de supervivencia puro, únicamente nos explican quién somos, qué necesitamos, a usar el laboratorio y a “mapear” la isla triangulando nuestra posición; a partir de ahí tendremos que ingeniárnoslas solos.

Muchas veces acabaremos perdidos sin ningún punto de referencia o dando vueltas en círculos. La sensación de angustia que se puede vivir en algunos momentos es terrible, llegaremos a experimentar qué es lo que sienten las personas que se pierden en el bosque o la montaña, puesto que no es tan fácil encontrarse una vez te ves envuelto en ello.

Análisis completo: http://tecnoslave.com/analisis-miasmata/
¿Te ha sido útil este análisis? No Divertido
A 14 de 14 personas (100%) les ha sido útil este análisis
18.1 h registradas
Publicado: 25 de enero de 2014
Miasmata es un juego de supervivencia y exploración. Sobre todo de exploración, en esto es el mejor al que he jugado. Su sistema de ir desvelando el mapa a base de triangular puntos de referencias es buenísimo.

Ojo porque no es un juego que guste a todo el mundo. No hay ni un solo disparo porque, de hecho, no hay ni un solo enemigo. Se trata de luchar contra la fiebre y la sed mientras exploras una isla en busca de la cura para la enfermedad que sufres. Su guardado por puntos de control y el estar atado a las cabañas donde confeccionar tus medicinas y calmar tu sed, ha conseguido que, por primera vez en un juego, haya tenido miedo a perderme en

Es tremendamente inmersivo. Lo consigue, primero, porque no abandona nunca la vista subjetiva: no existen indicadores flotantes ni pantallas aparte de la principal. Todo lo que tienes que consultar (mapas, notas, el reloj...) son modelos virtuales en manos del protagonista. Segundo, su sistema de control, aunque imperfecto, funciona muy bien: El personaje se acelera o frena en las pendientes, se cansa al correr, camina con dificultad en terreno pedregoso... etc.

Los gráficos están bien aunque no son los de una superproducción. Y además le faltan algunas cosas como la necesidad de comer o de descansar (Se puede dormir pero como forma de guardar la partida y avanzar las horas nocturnas). Carencias lógicas de un juego independiente, pero es que un juego como este solo lo puede hacer un estudio independiente. Aún así la isla es grande y bonita. Y está bien diseñada.

La historia vas construyéndola a partir de las notas y diarios que vas encontrando por la isla, al estilo "shock". Está bastante bien y mantiene el misterio hasta el final.

Personalmente, me ha encantado.
¿Te ha sido útil este análisis? No Divertido
A 2 de 2 personas (100%) les ha sido útil este análisis
12.7 h registradas
Publicado: 14 de julio de 2014
Genial. Uno de los mejores Survival - Adventure del ultimo año. Muy recomendable para quienes les gusta los juegos para explorar y meterse por distintos lados, bosques, etc. Muuy bueno
¿Te ha sido útil este análisis? No Divertido
A 1 de 4 personas (25%) les ha sido útil este análisis
1.0 h registradas
Publicado: 5 de septiembre de 2013
Vale la pena comprarlo, barato y muy entretenido
¿Te ha sido útil este análisis? No Divertido
A 0 de 12 personas (0%) les ha sido útil este análisis
1.6 h registradas
Publicado: 4 de abril de 2014
Maso no se garpa ni de oferta jajaju
¿Te ha sido útil este análisis? No Divertido
A 164 de 220 personas (75%) les ha sido útil este análisis
2.5 h registradas
Publicado: 8 de octubre de 2014
This game was rather attractive when I first spotted it some years ago. Everything felt good at first but after a while I left it. Why? This game, in my opinion, is quite limited. For you are not truly free in your actions. Yes, you got an illness and that's a valid handicap to make gaming more interesting. But that doesn't entirely explain why, for instance, I need to redo some actions which are not that interactive.

I'll give you some examples:

In order to know where you are you need to triangulate your position, it is not difficult and neither bad, but it grows dull after a while and then you feel like gonna quit (luckily you can find some maps at times). The map automatically shows your position which you have triangulated (this is okay) adding some unknown areas (quite unrealistic and I did not like it very much). It would have been better giving you a map of the island, or pieces of it, and then had to triangulate. Some books are filled with a rather common plot but still quite interesting at times. Player movements are really odd: it is completely uncomfortable for the character finds very difficult to climb flat hills.

1) You find a flower
2) You pick it up
3) You take it back to one of the labs within the island
4) You run a research over it and soon after process it (in a standardized way indeed for any item you find)
5) You get an output: an aspirine or some sort of boost or whatever

This feels very annoying and repetitive after a while. One pro point is that it there's a huge variety of stuff to find and analyse. It would have been quite cool if your working lab had an interactive feature on it.

The only enemy you have is some sort of black lion-like creature which can kill you with a single blow (it can infect you with fever if you're lucky enough to survive the attack). It can be everywhere around the map, especially at night during which is almost invisible (this is a good feature indeed). Weapons like knives or rocks prove useless. This is another interesting point which makes gameplay less boring. But still devs had to put some sort of weapon with which you could stun it (for more than a handful of seconds) instead of running away with the thing right just behind you (both you and the creature are liable to some glitches like getting stuck between trees). In order to go ahead with the game you'll encounter it a lot. Same point as before: annoying and repetitive.
There are some intangible enemies like fever and thirst but they are easily manageable if you get the hang of the game.

You can say: "The game implies you're desperate to survive". But I think that if they added some sort of food & build (placing a small camp given the necessary tools and items) mechanics, or just giving more interactive features on the things you do as a habit, it would have been a really good game.

In short:
I do not recommend this game to anyone who doesn't like doing the same stuff all the time. This game had the potential to be a good game indeed.

This is my review, now you are free to choose. I don't give Universal principles here and there so you do what you want.

Thanks for reading.
¿Te ha sido útil este análisis? No Divertido
A 64 de 71 personas (90%) les ha sido útil este análisis
4.9 h registradas
Publicado: 5 de abril de 2014
This game is amazing. It's ♥♥♥♥ing brilliant. There's almost nothing i would complain about in this game.

To start off, the concept is amazing and the execution is spot on. You are on an island, probably alone (yet to complete). And you are plague stricken for which you have to find a cure. The entire island is yours to explore. There are survival concepts such as thirst and fever. There is crafting and such with which you can make medicines and some perma-upgrades.

Now, the three things i loved the most about this game. First, the mapping system. You have to explore the entire map but it's not that simple. You have to use triangular cartography by using landmarks which is just awesome. And when you run, it actually takes time to stop because of your momentum which i think is a great idea for a realistic survival game. And the graphics are amazing as well. Beautiful when admired and scary at night.

This game is amazing. I like it because of it's reality aspect. Perfectly created and delivered. 10/10.
¿Te ha sido útil este análisis? No Divertido
A 51 de 56 personas (91%) les ha sido útil este análisis
14.2 h registradas
Publicado: 30 de diciembre de 2013
-- this review is lengthy and i would advise you take a gander at it in full --

A very fun and emotionally gripping experience. Unlike other games that shoehorn survival elements in, or simply can't take the leap to make it pure survivalist, this indie game made by two brothers pulls it off.

And how.

If you read the store page description of the game, you'd know that you are a plague stricken scientist, reuniting with your colleagues on an island.. but, as in any video game, something has gone horribly wrong. You find a blood soaked page, which details the cure's formula. And off you go..

As a pure survival game, there is no hunger mechanic, but there is thirst and fever. Thirst naturally accumulates and you must rehydrate from clean water sources or canteens regularly. Fever occurs from injury{falling from heights and getting scratched by a kittteh - more on Milo later} exertion (swimming, walking about), and ambiently, and you must take medicine that you craft from plants you find to offset it. Or take a nap.

You see, throughout the game, and exploring the island, you can pick up various plants and take them to camps where equipment is located to refine it and synthesize various medicaments and drugs that you take. These range from simple aspirin to drugs that permanently increase your physical attributes - as well as the cure, which you learn about from the Bloody note that you find from the beginning - detailing three agents each made from two rare plants.

Navigating the island is a challenge - you have no arbitrary minimap and you must fill in a map using triangulation. Which basically means that you must take your map out and get line of sight with two "known" landmarks to fill in an area - simply going there does not suffice... You can also triangulate distant landmarks by triangulating your position as normal, and then selecting said landmark as a third - you must do this from two different positions. They even give you a compass.

The actual mechanic of saving your game is quite interesting as well - you must sleep, select a candle, lantern, or put a log into a fire to save.

Oh, and the graphics are pretty too. The island is beatiful and has many different environments, from swamps to boreal forests to a mountainous japanese style bamboo forest. They managed to put all hud elements from the game into immersive 3d meshes - the journal is actually a 3d object that you turn 3d pages in and read text right off the texture. The map is the same deal.

Now, onto my favorite part of the game. The creature. Well, that and the notes you find that add backstory - but more on that later.

The creature is nicknamed Milo by the community, because it is based on the brothers' pet cat, MIlo. Milo is a strange leopard-lion-elk thing that stalks you through your adventure. He is very unique looking and can kill you with two swipes of his paws. You must fend him off with a torch, throw rocks at him(Which may or may not just ♥♥♥♥ him off), or break line of sight to get him to go away. You cannot fight back, and I wouldn't suggest running, as he'll catch up to your plague-ridden ♥♥♥♥ in seconds and anjoy a pre cooked meal, courtesy of fever. His eminent presence can be detected through upgrades to your stats and a heartbeat sound that grows more rapid as he gets near. Beware the Milo, for you cannot fight back.

The story is introduced through the notes you find in the camps throughout the game, ranging from journals, letters, and newspaper clippings, to your colleagues and your own's research notes. I assure you, if you invest the time into collecting some of these you will not regret it.

To top it all off, the satisfying and inspiring ending and final cutscenes, as well as the musical tracks and environments make for such a great indie experience that I cannot recommend this enough for those that have the patience - and if you don't well there are decent guides out there. And even then there remains the experience of exploring and avoiding Milo.
¿Te ha sido útil este análisis? No Divertido