Work together to survive the devastating Dinosaur horde in huge, endless environments.
User reviews: Mostly Positive (18,057 reviews)
Release Date: May 4, 2012

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"It really doesnt feel like a complete game but its cheap and its fun for a few hours with friends. fun and silly gameplay shooting dinosaurs."

Recent updates View all (62)

April 25

In 2012 we released one of the worst games of all time.

"An entirely broken FPS." - PC Gamer
"Please don't waste your hard-earned dough." - IGN
"A disaster." -

( We Need You )
Support Developers who support their fans. We are celebrating three years of FREE post-release support on 'ORION: Prelude' and we are releasing the 'Year 3 Update' to coincide. We are launching a F2P event to coincide with this. Please help us spread the word!

( Year 3 Update )
This new update includes two brand new Survival Co-Op maps, remastered Weapon SFX and a Version 3.0 game update.

( Steam Free-2-Play Event )
We are celebrating the release of this update with a Steam F2P event. This is a week-long event that begins on May 4th, 2015.

( ORION: Prelude @ Steam )

( YouTube & Monetization Policy )
We allow everyone to record our games and monetize them on any platform.

4 comments Read more

April 22

We want your feedback!

ORION: Prelude - Version 3 releases on May 4, 2015. This is a free content update that is being called the 'Year 3 Update' to celebrate three years of post-release support.

Above is an image of some of the content coming packed inside Version 3, which includes five new Survival cooperative maps and new weapon audio.

The map pictured above is called 'Outland' and it's a dense forest. This map was built as a tribute to two things: the recent Battlefront 3 footage which has my hype meter at 100% + the original Dino Beatdown world called 'Depth' for any long-time fans.


We are currently looking for feedback from every possible user:

  • 1. Are you interested in more post-release support for 'ORION: Prelude'?
  • 2. What is YOUR opinion on stretch goals for 'ORION: Prelude' here on out? X copies sold = X feature implemented.
  • 3. What kind of content would you like to see more of for 'ORION: Prelude'?
  • 4. Are you interested in Prelude on ANY other platforms? (Linux, Mac, PS4, X1, etc)

21 comments Read more


“An instant classic.”
Steam Review

“Best transformation of a game I've ever seen.”
Steam Review

“I am completely addicted.”
Steam Review

Steam Big Picture

Steam Workshop

The ORION: Prelude Developer SDK Beta is launching in September 2014.

If you're a Mapper and would like to participate in private testing please go here:

About This Game

'ORION: Prelude' is an indie Sci-Fi shooter (FPS/TPS) that seamlessly blends together incredible visuals and addictive combat. It puts you and your friends together into intense, cinematic battles using some of the most incredible weaponry and amazing vehicles in which you must work or compete against one another to accomplish mission objectives, explore giant worlds and survive the devastating Dinosaur Horde.

In addition to the return of the adventurous, survival-based cooperative gameplay and retro-inspired Arena Combat, 'ORION: Prelude' features massive, Open World Cooperative and PvPvE.

*Previous version names include ORION: Dino Beatdown (2012) and ORION: Dino Horde (2013).

Supporting up to a variety of game modes, including:
  • Survival (Objective)
  • Slaughter (Duration)
  • Rampage (Playable Dinosaurs)
  • Prehistoric (Custom Variable)

Supporting up to 10 players and offering 2 game modes:
  • Conquest (Cooperative - 5 Players)
  • Vital (PvPvE - 10 Players)

Supporting up to 10 players and offering 3 cooperative game modes:
  • Free-For-All (Deathmatch)
  • Elimination (Stealth)
  • King of the Hill (Territory)
  • Gun Game (Ladder Climb)
  • Instagib (Twitch Reflex)
  • Vital (Open World)

Supporting up to 10 players and offering 3 unique game modes:
  • 1v1 Duel (4 Playlers - Tournament)
  • FFA Duel (4 Players - FFA)
  • Team Duel (5v5)

Key Features:

  • Open World Gameplay
  • Cooperative & Competitive Gameplay
  • Dueling & Melee Combat Gameplay
  • 1st Person / 3rd Person Hybrid Gameplay
  • 15 Game Modes
  • 50+ Weapons & Gear
  • 30 Augmentations (Mutators)
  • 20+ Multiplayer Maps
  • 7 Vehicles
  • Full Weather System
  • Persistence & Player Progression (150 Levels)
  • Class-Based Gameplay & Player Loadouts
  • Statistics & Leaderboards
  • Lobbies, Matchmaking & Server Browser
  • Player Store (Cosmetics)
  • Rewards & Unlockables
  • Real-time Dynamic Day/Night Cycles
  • 10 Dinosaurs (All Playable)
  • 250+ Steam Achievements
  • 12 Steam Trading Cards
  • Steam Big Picture Mode Support
  • Bots & Offline Play
  • Tutorial System
  • SDK & Steam Workshop (Custom Maps)

System Requirements

    • OS:Windows Vista SP2 32-Bit
    • Processor:AMD Athlon X2 2.8GHZ / Intel Core 2 Duo 2.4 GHZ
    • Memory:3 GB RAM
    • Graphics:256 MB Graphics Memory (SM3)
    • DirectX®:9.0c
    • Hard Drive:8 GB HD space
    • Sound:DirectX 9 Compatible
    • OS:Win 7 / Win 8 (64-Bit)
    • Processor:AMD 4-Core / Intel 4-Core
    • Memory:4 GB RAM
    • Graphics:512 MB Graphics Memory (SM 3)
    • DirectX®:9.0c
    • Hard Drive:8 GB HD space
    • Sound:DirectX 9 Compatible
    • Other Requirements:Broadband Internet connection
Helpful customer reviews
325 of 356 people (91%) found this review helpful
1 person found this review funny
3.8 hrs on record
Posted: November 6, 2014
If this game was priced at $30+ I would say avoid it like the plague.

If this game was priced at $20 I would say don't bother waiting for a sale.

If this game was priced at $10 I would say just buy anything else.

If this game was priced at $5 I would say you could buy lunch instead.

If this game was priced at $1 I would say you have no reason not to own this.

So what I'm saying is you have no reason not to own this. If you even get one hour of entertainment out of it from soley looking at some nice graphics and laughing at some bugs and glitches that was a dollar well spent. It beats the hell out of paying $70 for a AAA-title for the same effect. The devs know this is not the greatest game ever made, but they have made leaps and bounds in progress from the days when this was considered "one of the worst games on Steam." And for precisely this reason they have dropped the price so much. They want to redeem themselves. They want people to play their game and give it a chance. What are you waiting for, you heartless ♥♥♥♥♥♥♥? It's only a dollar. Play their game.
Was this review helpful? Yes No Funny
438 of 497 people (88%) found this review helpful
3 people found this review funny
3.5 hrs on record
Posted: December 23, 2014
360 noscoped a T-Rex for 0.49€
Was this review helpful? Yes No Funny
297 of 376 people (79%) found this review helpful
8 people found this review funny
10.7 hrs on record
Posted: December 30, 2014
if(price < 1.00 && fun==true && online==true && payToWin==false){
return null;
Was this review helpful? Yes No Funny
99 of 113 people (88%) found this review helpful
3 people found this review funny
29.3 hrs on record
Posted: December 24, 2014
A T-Rex threw a rock at me and knocked me off the triceratops I was attempting to ride for an achievement 10/10.

But ♥♥♥♥, it was ninety-nine cents!
Was this review helpful? Yes No Funny
98 of 122 people (80%) found this review helpful
1 person found this review funny
376.3 hrs on record
Posted: November 17, 2014
Ah yes, Orion: Prelude, or as it will always be known to me, Orion: Dino Horde! This game has been quite criticized through the years (and in all honestly quite rightly so). they game if filled with bugs and lots of tedious grinding achievements. Still, despite all that I can't help but to love it. In fact it is the only game which I haven't uninstalled after reaching 100%.

So, there's no story to follow in this game and it's a pretty straightforward king of game. You're dropped as one of three classes (assault, recon and support) into a base where you're supposed to defend a generator against incoming waves of attacking dinos that don't enjoy your presence there. If all teammates dies or the generator is destroyed (a timer starts when it reaches 0% health and if it isn't repaired before time runs out it's destroyed) you all loose. If you survive all waves (10 for normal games and 30 for conquest games) then you win. Pretty simple. To your help you can buy a quite big assortment of weapons and perks and each class comes with a specific perk of their own (assault can jetpack, recon can cloak and support can heal).

This game has a lot of various pvps but there are only a couple which I really enjoy such as king of the hill and team elimination. The place where this game really shines is in regular Survival mode when you play together with a good, tight and cooperative team. This is where this game is at it's best! I don't think I've made as many friends in any game as I've made in this one.

So, in conclusion, if you want a good cooperative game and don't mind a few bugs here and there and can either ignore, or work through all the grinding achievements then yes, you will enjoy this game!
Was this review helpful? Yes No Funny
67 of 80 people (84%) found this review helpful
1 person found this review funny
39.2 hrs on record
Posted: November 25, 2014
"Well its only a dollar, how good can it be?"
16 hours later...
Was this review helpful? Yes No Funny
72 of 96 people (75%) found this review helpful
1 person found this review funny
36.8 hrs on record
Posted: December 2, 2014
Was this review helpful? Yes No Funny
33 of 36 people (92%) found this review helpful
1 person found this review funny
0.9 hrs on record
Posted: December 29, 2014
My dune buggy takes a flying leap directly into the face of a T-Rex.

The T-Rex is not amused and proceeds to stomp me to death.

All for $1.

Was this review helpful? Yes No Funny
25 of 28 people (89%) found this review helpful
1 person found this review funny
14.7 hrs on record
Posted: January 21
the third person animations on the player models look like deep fried aass
other than that it's fun to make these magestic creatures go extinct all over again by brutally blowing their heads off
577/12 - would kill baby raptors again
Was this review helpful? Yes No Funny
17 of 19 people (89%) found this review helpful
2 people found this review funny
1.9 hrs on record
Posted: December 26, 2014
Why the hell do games nowadays NEVER have any dinosaurs?

This game has dinosaurs. 10/10, Game of the Year, best 50ct I've ever spent.
Seriously, this game was hella fun for a few hours. I'd say it's well worth the money.
Was this review helpful? Yes No Funny
26 of 37 people (70%) found this review helpful
1 person found this review funny
4.5 hrs on record
Posted: January 28

$1 thats pretty good for dis game.
Was this review helpful? Yes No Funny
13 of 16 people (81%) found this review helpful
1 person found this review funny
13.0 hrs on record
Posted: December 23, 2014
It's fun with friends for a few hours every so often. you're crazy if you don't pick it up for this price.
Was this review helpful? Yes No Funny
13 of 16 people (81%) found this review helpful
1 person found this review funny
7.2 hrs on record
Posted: December 25, 2014
I got to kill dinasours with a knife during night while there was a storm raging. Epic game.
Was this review helpful? Yes No Funny
12 of 16 people (75%) found this review helpful
2 people found this review funny
11.5 hrs on record
Posted: December 24, 2014
Its Halo 2, but with more dinosaurs
Was this review helpful? Yes No Funny
8 of 9 people (89%) found this review helpful
2 people found this review funny
16.0 hrs on record
Posted: December 10, 2014
Orion: Prelude is the revised version of Orion: Dino Horde, which itself, is a revised version of Orion: Dino Beatdown. Confusing, isn't it?

Orion: Dino Beatdown; the original, was a terrible game that launched as an alpha, with terrible netcode, and justly received a Metacritic rating of 36. Ironically, if you check the Metacritic rating, it'll be for Orion: Dino Horde. Apparently Metacritic hasn't received word from the developer that they've changed the name yet again.

But enough about how Spiral Game Studios keeps trying to reinvent the game by renaming it and patching problems that should have been fixed at release; what is the game like? Orion: Prelude is a team-based, cooperative, sci-fi, wave-based, FPS where your goal is to kill dinosaurs and complete objectives. The game is essentially what you'd get if you took Killing Floor and Halo and mixed them together. It's borrows Killing Floor's wave-based combat, where every kill gives you money to better arm yourself, and every wave gets progressively harder; and it borrows from Halo in the Shield mechanic, the vehicular combat, (although this could be atributable to other games as well) and the overall look of the game.

Up to five players can play together on a single server. Within the game, there are three classes which further distinguish your role from the role of the other four players. The classes are Assault, Support, and Recon. While I'd normally explain in depth the differences between these classes, I can't because there really isn't much of a reason. If you're playing this game, you're playing it in either Survival or Conquest. Sure, there are other gamemodes to choose from, but they're all variations of standard PvP gamemodes that exist in better incarnations in other games, so you'd be better served playing them there. If you bought this game, you bought it for the dinosaurs, which means it's Survival or Conquest for you. In that case, pick Assault if you want to kill things, and pick Support if you want to keep teammates alive. There's no reason to pick Rogue in these gamemodes. It seems as though the developers made it for PvP only, as in Survival and Conquest, it suffers greatly.

The differences between the classes really come down to the single class skill you get at spawn. The Assault class gets a jetpack ability which can be improved by purchasing augments. (more on this later) The Support class gets access to a medigun which can heal a player, and with the proper augment, replenish their ammo supply. The Rogue class can turn invisible which can act as an effective temporary invulnerability, as all Dinosaurs will immediately de-aggro from you and never attack you while stealthed. Those are the differences. There's also some weapon differences, but all weapons can be bought by purchasing an augment that allows you to purchase class restricted weapons.

What are these augments I keep referring to? Just like in Killing Floor, at the end of a wave which is usually around 20-30 dinosaurs, you have a minute to buy weapons or augments at their respective shops. Weapons are divided into four categories: primary weapons, secondary weapons, pistols, and Adrenaline weapons. Primary weapons are your standard rifles, LMG's, and Sniper Rifles. Secondary Weapons are SMG's and shotguns. Pistols are pistols, and Adrenaline weapons are class-specific weapons.

Augments provide boosts to your character's fighting ability; from double jumping to boost jumping, to additional armor. There's even an augment which allows you to feast upon dinosaur corpses for health which sounds neat, but is utterly worthless. While Augments are important, there's really a select few which are far and away better than the rest which you'll find yourself buying in the same order every game, irrespective of what class you are. There are a few class-specfic augments which I alluded to earlier, but most of the desired ones are shared amongst the classes.

Onto the dinosaurs. There are tiny dinosaurs like Compies, medium sized dinosaurs like Raptors and some larger spitting dinosaur, then there are large Dinosaurs like Triceratops, Stegosaurus, and of course, the T-Rex. Instead of being smart and making the large dinosaurs the primary objective of the game, the entire game focuses around killing the small dinosaurs, because the waves are determined by a specific number of dinosaurs that spawn, not the type of dinosaur. A dinosaur killed is a dinosaur killed no matter what type it is. So your best bet is to just kill all of the easy-to-kill dinosaurs, and leave the large ones alive to clean up after the wave has ended, assuming you don't have anything pressing to buy. This is the main gripe I have with the game. The main pull of the game, fighting giant dinosaurs, has been relegated to a mere distraction and nothing more. If you stop and spend time killing the large dinosaurs, you're opening yourself up to a whole lot more damage by the smaller raptors.

When I refer to the large dinosaurs as distractions, I really mean annoyances. They'll hone in on one particular player, then constantly harass that player until one of the two dies. The T-Rex is especially annoying because it has this weird snare effect when it's damaging you which prevents you from getting away from it, so you just get caught and repeatedly bitten until you go down.

When you lose all of your health, the game borrows the downed system from Left 4 Dead, where you can be helped up. I say they borrowed it because it seems to be a combination of the system from Left 4 Dead and Payday. Your character can fall three times. If it falls a fourth time, you're dead and can only respawn next wave. Killing a dinosaur while downed gives you a second wind, or you can be helped up by another player.

The graphics are shockingly mediocre. It seriously looks like Halo 2 on Xbox circa 2004. The Source Engine has never looked as dated as this in a long time. The character models are all low poly count, and the environments are all bland and uninspired. They are large, so there's plenty of blandness to go around.

Overall, Orion: Prelude is exactly what you'd expect it to be; a bland cooperative shooter which has no identity of its own. The developers apparently tried to ride off of the novelty of players fighting dinosaurs in a sci-fi setting, but the game requires more than that. On top of that, there's something rather deceptive about trying to hide your failure by re-releasing the game under a different name, as if to try and avoid that ugly metacritic rating.

The game is nothing more than Orion: Dino Beatdown, just patched to be a working copy of it, rather than a buggy, laggy mess that shouldn't have been released. All these complaints aside, the game will provide you with a few hours of entertainment before the repitition and realization that all of these gameplay choices have been pulled from more successfull games. Considering that at the time of this review, the game is being sold on Steam for $1, with a 4-pack of it costing a grand total of $3, I struggle to think of another Steam title which you can get several hours of entertainment for four people, for just $3. Perhaps in that regard, Orion: Dino Beatdown/Dino Horde/Prelude succeeds.
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10 of 13 people (77%) found this review helpful
1 person found this review funny
17.9 hrs on record
Posted: March 21
Step 1: find VTOL
Step 2: That's it, you win.
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6 of 7 people (86%) found this review helpful
1 person found this review funny
11.4 hrs on record
Posted: February 23
The community is very strong. Guys with jetpacks hide on cliffs, laughing while everyone else gets smashed on the ground. Not bitter.
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6 of 7 people (86%) found this review helpful
1 person found this review funny
1.4 hrs on record
Posted: January 4
Surprisingly fun for its price! Feels good to play this.
Was this review helpful? Yes No Funny
7 of 9 people (78%) found this review helpful
1 person found this review funny
18.8 hrs on record
Posted: January 3
Orion: Prelude is a FPS where you (primarily) defend your base against waves of dinosaur enemies. It's not well-explained where you are or why dinosaurs are attacking your base (especially the herbivorous ones, like Stegosaurus and Triceratops), but that perhaps misses the point: shooting dinosaurs. This aspect feels pretty solid; big dinosaurs are hard to deal with and can easily kill you, little ones surround you and can take you down in a short period of time. I'll tackle major aspects of the game below instead of a list of pros and cons. If you're looking for deep gameplay, look elsewhere. If you're looking for a little bit of fun, especially with friends, this is well worth your one dollar (but perhaps not much more). OVERALL: 5/10

Gameplay 6/10
I've only ever played the standard co-op wave survival game type (with bots and/or friends), but there are other game modes. Each of three classes has a specific ability and set of weapons, which are adequately differentiated. Difficulty scales nicely over the ten waves, and rewards for defeating dinosaurs allows you to purchase weapons, turrets, and/or item upgrades. This all feels pretty good, but the weapons could be slotted into 4/5 categories which feel almost exactly the same. Vehicles (which seem mostly ripped from Halo's assets) are an interesting addition and are fun to use, but somewhat difficult to steer. Dinosaurs' models match their power level neatly, and you'd better be packing top-tier weapons when more than two at a time are nearby. Killing an enemy while downed allows a self-revive in addition to teammates' ability to revive you.
One of my biggest issues with this game is the AI. The dinosaurs will not know what to do if you are outside of their attack range and will waggle back and forth below seemingly forever. Cloaking immediately breaks aggro of ANY dinosaur and seems to prevent re-acquiring you as a target for a few seconds. Teammate AI is even worse. They rarely revive you, fail to efficiently capture points, routinely fail to headshot dinosaurs sitting in front of their face, and have garish joke outfits like sandwich hats and wizard cloaks. Playing with bots is really only worth it for two reasons: they aggro dinosaurs and can (for some reason) accurately take down dinosaurs flying at/near the game ceiling.

Graphics: 5/10
Looks solid most of the time, but things get wonky when dinosaurs die, and when playing in 3rd person. Switching weapons results in a very low-quality model for the first second or so. Dino models are solid, character models less so, (bot costumes -> horrific). Environment looks good all around, weather effects look great, but hinder visibility in ways that are counterproductive to a FPS.

Music/Sound: 4/10
I have only ever heard two songs in this game, both of which are rousing and I quite like. If you didn't like them, they'd get old fast.
Sound is less good overall. Sound balance is wonky: one pistol is about twice as loud as every other weapon; T-Rex roars seem to badly clip the audio (and my eardrums); slow-mo start sound blares unreasonably. Could be better balanced and menu audio options don't seem to affect all sounds. Everything else is solid, but leaves something to be desired.

Performance: 4/10
The game seems to be very poorly optimized and freezes for a few seconds when awarding class level ups, and uses far more system resources than I would expect from a game like this.
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7 of 9 people (78%) found this review helpful
1 person found this review funny
2.2 hrs on record
Posted: December 24, 2014
This game is like Dino D-Day, only better.
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