Paranautical Activity combines the classic FPS action of games like Doom and Quake, with the randomness and difficulty of modern roguelikes like Binding of Isaac and Spelunky.
User reviews: Mostly Positive (1,103 reviews)
Release Date: Feb 14, 2013

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"Gameplay formula of Binding of Isaac translated in FPS form. The graphics and music might not appeal to everyone, but at least it has skeleton enemies."
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February 12

Yep! You heard it here first... or maybe second (thanks GAF)

Anyway, enough of that jibber jabber... Paranautical's Backtivity.

Deluxe Atonement has been achievedeth....

To all the existing PA players, check in your Steam PA folder for some added goodies, I highly recommend the pro guide. Personally, it helped me go from a shit player to pretty average one in a matter of weeks.

Heres how to get there... right click properties > local files > browse local files...

Any problems send a mail to and I will send you the files, most likely by carrier pigeon or morse code. But whatever quirky mid 20th century method I choose to send your digital assets in, rest assured you will receive them within 24 hours of mailing me!

Extra in game content comes in the form of a new level type, a new item & a new goddam weapon god dammit. I sincerely hope you enjoy the game being back on sale as much as I've enjoyed traversing the Paranautical tightrope!

Nick Alfieri

57 comments Read more

October 9, 2014

Progressionautical Activity V1.9.1 - ACHIEVEMENTS & NEW STUFFS

added elevator ding

added classic mode (no ghost. cant get to 8th floor)

added hardcore mode (ghost. can get to 8th floor)

added infinite mode (ghost. repeat ghost secret to loop back to first floor)

added randomized mystery man character

added 40 new room variations

added new texture set for the 8th floor

added more fanart and sound credit to credits

added oculus support

added basic gamepad/controller support

added adaru to final boss waves

added notification in controls menu that controls have to be rebound in the game’s launcher

fixed items intersecting pedastal in poseidon boss room

fixed omni death particle not scaling with him

fixed Adaru humping

fixed ghost showing up during the credits

fixed dhalia’s mom superboss being completely broken on some machines

fixed oar acting as a jetpack

fixed being able to escape elevators after activating them

fixed N on compass sticking through the back

fixed battle snail not damaging you if you sit inside him
fixed starfish not properly reviving you with kamikaze

fixed evil eye causing lots of tridents to spawn

fixed trident vanishing when swapping to superweapon

fixed shops and some other rooms having cracks in the corners

fixed flipper making the world end with laser shotgun

tweaked doorframes to make them glow

tweaked beard+sickle combo (nerf)

tweaked screen shake

tweaked audio balance

tweaked some boss rooms

tweaked hanz pistol

tweaked ghost (buff)

tweaked credits so they return you to the main menu instead of the character select screen

35 comments Read more

About This Game

Paranautical Activity combines the classic FPS action of games like Doom and Quake, with the randomness and difficulty of modern roguelikes like Binding of Isaac and Spelunky.

-Unique FPS/Roguelike combination
-Procedurally generated levels
-Impossibly fast gameplay
-Hidden levels
-Over 100 items
-40+ enemies
-Ridiculous bosses‏
-Kick ass Dubstep soundtrack

The Deluxe Atonement Edition includes the following
-Developer footage & commentary, from prototype to pre alpha to full release!
-The Seafarers Guide; A pro guide with a nautical twist. Consult the pro guide to become the leanest, baddest, mostest bestest Paranautical Activity player you can be.
-1 new level type, 1 new weapon and 1 new item.
-Wallpapers baby!

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows XP or better
    • Processor: Intel P4/NetBurst Architecture or its AMD Equivalent (AMD K7)
    • Memory: 2GB GB RAM
    • Graphics: Intel GMA 950 or AMD Equivalent with OpenGL 1.2 Support
    • Hard Drive: 300 MB available space
    • Sound Card: N/A
    • OS: Mac OS 10.5.8 or better
    • Processor: ntel P4/NetBurst Architecture or its AMD Equivalent (AMD K7)
    • Memory: 2 GB RAM
    • Graphics: Intel GMA 950 or AMD Equivalent with OpenGL 1.2 Support
    • Hard Drive: 300 MB available space
    • Sound Card: N/A
    • OS: Any
    • Processor: ntel P4/NetBurst Architecture or its AMD Equivalent (AMD K7)
    • Memory: 2 GB RAM
    • Graphics: Intel GMA 950 or AMD Equivalent with OpenGL 1.2 Support
    • Hard Drive: 300 MB available space
    • Sound Card: N/A
Helpful customer reviews
66 of 87 people (76%) found this review helpful
1 person found this review funny
0.5 hrs on record
Posted: February 18
I should probably have seen the Early Access reviews before purchasing it, but this is where you get a bit more savvy about positive reviews than negative ones.

And frankly, this game isn't too bad. It's just not... fun and doesn't feel too interesting. Think Doom and Binding Of Isaac, but with a worse Health system, weapons that feel powerless at times, and surprisingly bad frame drops at times.

Paranautical Activity (Deluxe Atonement, for its re-release after the minor controversy), is a rogue-lite FPS game, that seems to take notes from Doom and Binding Of Isaac. Yet, it seems to do it in ways that work against the game. While it does use some of the things (fast paced shooting, randomized rooms and floors, varying stats on each character), it doesn't use it well.

Weapons feel quite good to use, although some of them feel rather weak. The shotgun, from my point of view, felt like the biggest let-down of all the weapons, with the bow being powerful and one or two-hitting enemies, with no problem.

Power-ups feel nice too but with next to no proper explination as to what they do, when you pick them up, leave you to guess what they do, for whatever situation you're about to plummet into, with said power-up.

Enemies are... alright. Mostly tedious to deal with, since some range from simple "fire a bolt, wait for a while, rinse and repeat" to "'bullet hell'-like spam". Surprisingly, the most annoying enemy I faced was the floor sharks. Why? Tank-y characters can't dodge well, and with the floor sharks, I've ended up being juggled by them, shooting them with a shotgun that did abysmal damage, until I either died or completed the room that way.

Levels are pretty much the same square box, with randomised preset props, and enemies are dumped in when you enter. Nothing to write home about, except for what could amount to some problem with moving under staircases. Ended up getting stuck there, which has broken the flow of gameplay, quite a lot. There also seems to be some odd dissonance with the enemies that spawn in some rooms? Sometimes you get enemies who spawn in there, who get stuck in parts of the level geometry and just kinda... sits there.

The characters have different spawn weapons, health and speed, meaning that you have some variety in what you can do and can't do. And by variety, it boils down to how far you can get with the fast characters. I mentioned above that the tank-y characters are slow, and even the extra health they have, just makes them a sitting duck until they die. Along with some of them getting weapons which would be ideal for fast characters, since they promote "attack-retreat" tactics, they work against the character, requiring them risk taking hits, which they most likely will, to pump in shots that don't feel like they do much. Compared to the bow or the sicle, the shotgun feels like the ♥♥♥♥♥♥ pistol you throw out the window, as soon as you see anything remotely non-pistol like.

The bosses are... okay. They look interesting, but their design and looks are pretty much meaningless, since most of them just fire shots are you, non-stop until they spawn enemies or do some third thing that makes them slightly different from each other. And, honestly, they could be interesting if most of them didn't feel like the same boss. They just move around the area and shot, not really doing anything else, than the animation their set. Which sucks, cause the bosses I fought, looked really interesting.

The game itself, is it worth it, even after all that I complained about? For some people, if you've run out of rogue-lite games, akin to Ziggurat, it could be. If there's some more tweaks to the game, such as a revamped health system, characters and weapons being buffed, as well as some changes to make bosses less dependent on luck or power-ups, it can be a very fun game. Also the font is pretty damn ugly to look at, in the menu. And the menu looks really amateurish, which is kinda sad, considering a lot of indie games do a lot to make the menus look presentable.

Was I satisfied with the product? No. I felt like I bought a game that could've benefitted from more time in Early Access, especially now that we have a new dev team who works on the game. Hopefully, some future patches can make them game more fun to play and less annoying to deal with.

Do I recommend it? As you saw above, I don't. If you want to jump into the genre of rogue-like or rogue-lite or whatever the cool kids call it, look for a game like The Binding Of Isaac, Ziggurat, or look up some games within that genre on your own. If you really want it, prepare for a game that you may dislike or find too tedious to keep playing.
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336 of 546 people (62%) found this review helpful
6 people found this review funny
7.2 hrs on record
Posted: February 12
The game survived the ban hammer from gaben himself! you know it must be a pretty damn good game then

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52 of 77 people (68%) found this review helpful
1 person found this review funny
2.2 hrs on record
Posted: February 17
Voxel FPS with Quake-y movement and randomly generated rooms.

Movement is good, but shooting is unsatisfying. Rooms are randomly generated, but there isn't a lot of variety and floors/runs end up feeling the same in the end. Menus look rushed/unfinished. In the end, it's a shallow game that is alright for the first few goes, but fails to introduce any real variety.

Don't buy it.
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73 of 121 people (60%) found this review helpful
1 person found this review funny
1.3 hrs on record
Posted: October 16, 2014
Early Access Review
Paranautical Activity is a game that combines Doom with Binding of Isaac. Which is a good concept in theory, but it's execution is disappointing. The problem is that it removes most of what makes Doom and other twitch fps so good. It misses cool weapons and enemies. Also the level design is bland. It's basically Binding of Isaacs boxes attached to each other where you clear a room to go to the next one until you find the floor exit. So no keycards and secrets. The room design is really bland. Same goes for the presentation. It's voxel style graphics just don't work for this game. Also the music is annoying. Hopefully in the future some company picks up the concept and does a good execution.
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56 of 93 people (60%) found this review helpful
1 person found this review funny
2.1 hrs on record
Posted: February 16
This game gave me a massive case of "meh".

People keep saying this is like Doom and Binding of Isaac. I have Hundreds of hours between those three games (Doom 1 2 and BOI) and this is nothing like those. Not every FPS with ♥♥♥♥♥♥ graphics is like Doom (BTW doom was not a Volumetric Pixle game it used sprites and was the graphical equivalant of Crysis for its time) and not every Rogue-lite is like Isaac (which is the KING of Rogue-lite).

Combat feels slow and boring (strafe, shoot, rinse, repeat), I mean you have to keep moving but it does not feel fast paced, just lame. The optimization is poor at best. Someone explain to me why skyrim runs at 4k resolution no problem but this game bounces between 50 and 600fps constantly. Weapons are uninspired and EXTREMLY limited. Powerups require cash and you rarely have enough for anything decent unless you save and gimp yourself.

If you want a FPS rogue-lite that doesnt run like crap and play like an autistic version of the two games everyone seems to be equating this to, try Eldritch. Or if you want to truly play a game like Doom or Isaac, just get those games, they are both infinitely better.
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46 of 75 people (61%) found this review helpful
1 person found this review funny
3.7 hrs on record
Posted: February 12
Paranautical Activity is an interesting little game. Similar to games like Binding of Isaac, only a first person shooter, with voxel graphics. Never thought I would enjoy this, but it's a fun game. It is fairly hard, and the guides on steam are ?outdated? so some items will be a mystery until use.

Happy to see it return on steam. Here's hoping for more guns, rooms, loot, monsters, updates, and much more hours of fun.
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41 of 67 people (61%) found this review helpful
1 person found this review funny
2.0 hrs on record
Posted: October 20, 2014
Not balanced at all, some bosses have attacks that are too random or there are too many projectiles to even dodge. Has hardly been updated over the half a year or so that I've owned it and would have been a waste of money if I didn't get it through Humble Bundle. It advertises the difficulty of BoI and Spelunky but in Binding of Isaac you can beat the whole thing with half a heart without taking a hit, it's all skill. This game requires you to be lucky and not get a boss who spawns eight different enemies that shoot projectiles faster than you can move and that you can't possible see at the same time because half of them will be standing behind you at any given moment.
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19 of 27 people (70%) found this review helpful
1 person found this review funny
4.9 hrs on record
Posted: February 28
This is an abuse of Early Access system. It is not polished, it has many bugs, it has really poor optimization. And the devs first mocked with people, then mocked with Gabe. then got kicked out, then sold the game to a different publisher in its unfinished state.

Yeah aim of the developers is not reached since they lack basic courtesy. Anyway, what was that aim? It was simply replicating BoI in FPS setting. Shops, bombs, most of the skills and upgrades were designed on this. This is not bad, since BoI is really fun, but this does not add anything original to the genre either. Every addition came from some other roguelike, e.g Ghost from Spelunky. It is good knowing that developers also like the games I like and many likes, but a collection of features from some well known very well executed games to build a buggy, unfinished mess is completely different thing.

What is the original side of the game? To be fair it has two. First, its art style. User interface and menus are poorly designed, and game plays like the worst possible Unity example once can imagine, so expect stutters when passing through different menus. But in game voxel art is not that bad, and it feels unique. Also the soundtracks are not that bad, and distinct from other roguelike games. But being unique is not always a good thing, check some gameplay videos first, you may not like these at the end.

I am not a good FPS player, so I did not reach past floor 3, but it is not necessary to finish the game to see that this game is abandonware. Any obvious no brainer bug will be there until eternity while new publishers find publishing the new version with a gameplay video and a pdf file rather than some content wise and bug crushing more useful.

If u LOVE FPS and also LOVE binding of isaac, u may enjoy this a little, if u also are good with ignoring its bugs. If your feeling towards one of those two is less mediocre, u are advised to go and play some other FPS-roguelike. I can also advice you some other FPS roguelikes, since I have tried many:

- Ziggurat
-Tower of Guns
- Fancy Skulls
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7 of 7 people (100%) found this review helpful
0.2 hrs on record
Posted: March 24
Disclaimer: I love roguelikes of all types, and even I couldn't even enjoy this game.

I thought maybe I'd give this game a shot, considering the hype surrounding it because of that dude. Was hoping it'd be some kind of gem, something truly magical where I could understand why he was so upset. I always try to refrain from crapping on other games because I KNOW how much work and love and time goes into them... but this game is bad. The UI, the artwork, the generic electronic soundtrack, nothing meshes well, or feels like it belongs in the same universe.

Gameplay wise, the movement speed is wonky and floaty, not in a good quake 3 sorta way. There's almost zero weight or feel to anything, no way to tell how big explosion radius are, melee weapons are nearly useless, weapons dont feel good to use; I'm looking for redeeming qualities and I can't seem to find any; This game is an idea, it should still be in early access because it lacks zero finesse, polish, character or even just reason to play it.

There's an entire steam store full of roguelikes and roguetypes that are worth your money, Tower of Guns does a better job of what this game is trying to do, go play that instead. Do not buy this game, it's passable at best, do not give in to the hype.
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6 of 7 people (86%) found this review helpful
2.7 hrs on record
Posted: March 23
this game should have stayed banned

the dev is an ♥♥♥♥♥♥♥ and the game is incredibly mediocre. It's not worth it even for a dollar. If the dev was at least a nice guy sure, but he's a ♥♥♥♥ so don't bother supporting him
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4 of 4 people (100%) found this review helpful
1 person found this review funny
1.2 hrs on record
Posted: March 21
I'd detail all my reasons for disliking the game in a detailed and consise review, but the devs might get upset and threaten to kill me.

So I'll just say I'm less than satisfied.
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77 of 146 people (53%) found this review helpful
1 person found this review funny
3.1 hrs on record
Posted: February 14
Pre-Release Review
From the author that threatened to kill our lord and savior, Gaben, comes the game that survived His holy Banhammer. The best mix of binding of isaac and doom ever.
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4 of 5 people (80%) found this review helpful
12.5 hrs on record
Posted: March 16
Let's neglect the fact that the original dev was a huge ♥♥♥♥ to everyone. Let's neglect the fact he raged like a child for a simple fixable reason and said some messed up things on twitter. Let's neglect the fact he outright cheated the original music composer out of pay, after he put personal pursuits on hold because he was told he'd get paid. Let's neglect the fact that the game got taken down off steam, bought out by a new publisher, and brought back to steam.

Its still an obsolete version of Ziggurat. While there are differences, in just about every regard Ziggurat is a superior game and your money would be better spent on that. This game was enjoyable for the nonexistant price of a humble bundle game, but I can't recommend spending any more than $5 on this.
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23 of 43 people (53%) found this review helpful
1 person found this review funny
13.2 hrs on record
Posted: February 16
No support for my video card?
Game is pixelated, the FOV is messed up. Blackness everywhere for every enemy, I tried every solution.

It'd be good if I could play it.
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506 of 654 people (77%) found this review helpful
1 person found this review funny
8.1 hrs on record
Posted: May 6, 2014
Early Access Review
Disclaimer: This review is for an Early Access game, which has changed since this review was written. I have no interest in reinvestigating the current situation, so take it with a grain of salt. The developer has released updates since this review was posted.

The game itself is not bad. I've found it decently enjoyable. Not a huge amount of replay value, but I got to the end once. The problem with Paranautical Activity is the developer.

The developers have continuously insulted and mocked people who bought their game. In addition, they have been less than honest. The game was marketed for over a year as having co-op incoming (and as of this review, the store page says the developers are still working on it), yet that feature was suddenly canceled. The developers insist they have been working hard on bugfixes and content updates, yet have not released anything, even missing a promised deadline by over two months (patch is yet to be released as of this review). Furthermore, the devs have been silent on the forums (when not aggresively insulting the people who bought their game) and insist you should visit their website, where they will keep people updated; visiting their webiste reveals no new news in two months, and the last message was just an apology for a delay (that has still not been resolved). And when fans have the nerve to say they aren't being treated fairly? The devs say people are "entitled." Do not buy this game, do not support this kind of rude immaturity from developers, do not support Early Access games that are deceptively marketed.
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315 of 429 people (73%) found this review helpful
1 person found this review funny
0.6 hrs on record
Posted: February 15, 2014
Early Access Review
Horrible support, you post a bug report or a suggestion and get banned from the forum without warning, checking the developer's post history shows only arrogance and ignorance, too bad.
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186 of 245 people (76%) found this review helpful
1 person found this review funny
17.9 hrs on record
Posted: September 14, 2013
Early Access Review
Wow! I did *not* expect this game to be so addictive and absolutely satisfying. A long-overdue and well-executed fast-paced, circle-strafing, old school twitch shooter feel with a lot of elements very much like Binding of Isaac (a very good thing, and I mention the likeness only to its credit.) Different starting characters/builds with different stats and starting weapons to choose from, randomized/procedurally generated rooms and floors, health/armor/gold/bomb drops off enemies, shops on each floor, tons of unique personal upgrades to buy or earn at the end of each floor, etc. With even more content to come, and co-op multiplayer on the way (dear god yes!), I haven't been this pleased with and addicted to any indie title since FTL.

Most importantly, the core controls and mechanics are an absolute joy. The pace and precision of the controls and the action feel absolutely spot-on. This is something many games destined for mediocrity have overlooked in lieu of trying to do everything else. When it comes down to it, the core mechanics, the precision and pacing of the controls of any shooter are at *least* half of what we either enjoy or can't stand about them. And more often than not, we barely even consciously realize that, if at all. Paranautical Activity absolutely nails it in terms of *exactly* how a shooter like this should feel, and it's a feel that is too rare these days. As a pure gaming experience, this one is a huge breath of fresh air. Bravo!
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130 of 171 people (76%) found this review helpful
1 person found this review funny
1.8 hrs on record
Posted: February 8, 2014
Early Access Review
would have expected more content from this game after 10 or more tries the rooms just feel the same, hasnt been a memorable update to the game if there even is one. only thing that sames to keep you going are the boss fights plz give some other incentives
ways that would improve the experience as follows;
- Make the main menu more presentable just looks quickly hashed right now.
- More weapon variety and costumization with weapons than the 4 you can use now.
- Give the world of Paranautical Activity a personality e,g charm, character instead of a dark dreary boring rooms even binding of isaac has personality not only through it's art style but through menus/enemies/environment etc.
- Don't ever resort to normal text font for the shop items or anything other than your own, if it isnt worth it to you it isnt worth it to people to play.
- continue with the funny name approach with the guns
- update more regularly atleast month to month bases if it cant be done weekly or alternate weeks.(more reason for people to play everytime there is an update)
- maybe even the option to play with friends online/local co-op through the game (easier said than done i know)

at this place in time i hope it gets improved but right now it isnt really worth it to play
the points are coming from a fellow artist and game developer wishing better for this game
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129 of 179 people (72%) found this review helpful
1 person found this review funny
5.6 hrs on record
Posted: February 26, 2014
Early Access Review
How this got onto Steam is beyond me, every sound effect sounds like it's either been lifted from TBOI or a freesound site and there's seemingly 10 items tops and I managed to go into the exact same room layout (and enemies) 4 times in one level.
I'm glad I got it with the Humble Bundle because if I'd actually paid money for it I'd feel a lot more cheated.
It hopefully will become worth playing over time but I don't know why games can't just be worked on and basically finished before being thrown out, the entire thing screams first-game-made-in-Unity and is trying way too hard to be The PainKiller Doom Binding of MineQuake.
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226 of 341 people (66%) found this review helpful
1 person found this review funny
1.5 hrs on record
Posted: May 8, 2014
Early Access Review
The game had lots of promise, and planned features that won't ever see the day. The developers, in the steam store page, say "We're planning to add multiplayer co-op in the very near future.." and now they have scrapped that feature entirely without any sort of compensation to the people who bought the game for this exact reason.

Do not buy this game. Do not support Code Avarice (the developers) in any project they choose to move on to. They've taken our money and they've abandoned their game.

As for the actual review:

Pros: Rogue-like FPS.

Cons: Very shallow. Clunky movement. Everything feels the same after playing for 5-10 minutes. There is just so very little content that it is insulting to call it a Rogue-like.
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