Work together to survive the devastating Dinosaur horde in huge, endless environments.
User reviews: Mostly Positive (23,238 reviews) - 76% of the 23,238 user reviews for this game are positive.
Release Date: May 4, 2012

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Buy ORION: Prelude

AUTUMN SALE! Offer ends December 1


Buy ORION: Prelude 4-Pack

AUTUMN SALE! Offer ends December 1


Recommended By Curators

"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 (106)

November 26

100 Free Steam Copies of Guardians of Orion (via YouTube!)

We had released another 2,000 codes for Guardians of Orion today. We plan to release another 1,000 - 2,000 codes tomorrow, bringing us around the 1/2 way delivered mark. If you are still anticipating a code there is still hope!

Otherwise we are going to have a variety of new events allowing fans to obtain a free or discounted copy of our brand new Dinosaur & Robot Shooter, 'Guardians of Orion'. Here is the first YouTube event - Go, Go, Go!

6 comments Read more

November 25

How To Use Dinosaurs To Save 50%

Buy now to be apart of the Loyalty Discount for our brand new game, Guardians of Orion! Launching via Steam Early Access on December 1, 2015. Loyalty Discount members are invited to save 50% for the first two weeks (12/1 - 12/15).

ORION: Prelude is the Best/Worst game on Steam and currently 50% off to celebrate the new Steam Exploratory Sale (11/25 - 12/1).

Share, Like, Comment!

11 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
236 of 283 people (83%) found this review helpful
226 people found this review funny
9.9 hrs on record
Posted: June 9
The ONLY thing that could make this better would be if there were game modes with nazi dinosaurs.
Was this review helpful? Yes No Funny
199 of 237 people (84%) found this review helpful
248 people found this review funny
8.4 hrs on record
Posted: June 14
Got 360 no-scoped by a T-Rex throwing a rock at me

11/10 IGN
Was this review helpful? Yes No Funny
123 of 150 people (82%) found this review helpful
105 people found this review funny
13.3 hrs on record
Posted: June 20
Always wanted to know what would happen if you rammed a jeep into T-Rex

Was this review helpful? Yes No Funny
66 of 71 people (93%) found this review helpful
11 people found this review funny
11.0 hrs on record
Posted: June 10
TLDR version;

Co-op or versus horde mode shooter with dinosaurs. Some bugs and lacks polish, but for its price (50 Euro Cents thereabout?) this is a shockingly FUN game. If you're looking for a co-op game to play with up to four other friends, I'm giving this game a glowing recommendation!

In a bit more detail:

What's good:
  • Dirt cheap
  • Large maps with obvious inspiration from the Halo games
  • Surprising amount of depth thanks to the three classes, gear choices, augments and vehicles
  • Competent and frantic horde mode gameplay
  • Dinosaurs
  • Silly waves

What's bad:
  • Some obvious bugs here and there
  • Some nice shaders and lighting effects but ultimately not a great looking game, player models in particular are butt ugly
  • Poor volume normalization, you'll know what I mean when you hear the gatling guns fire
  • Solo play with pretty basic bots is supported but feels very lacklustre


I'm quite frankly blown away at how many hours of very entertaining horde mode shooter action my friends and I have had with this game already, value for money wise I don't think I've ever seen any game quite like this. As such I can't recommend this game enough. If you compare 'ORION: Prelude' to 'Killing Floor 2' it doesn't hold a candle of course, but that would be silly, wouldn't it ? I love this game!
Was this review helpful? Yes No Funny
49 of 56 people (88%) found this review helpful
20 people found this review funny
20.5 hrs on record
Posted: June 4
What can I say about ORION: Prelude? Let's start with what it's not...

It's not a perfect game.
It's not 100% bug-free.
It's not a contender for Game Of The Year.

But more importantly, let's go on to what it is...

It's extremely fun.
It's very well supported.
It's extremely fun.
It's got a great community.
It's extremely fun.
It's amazing value for money.
Did I mention that it's extremely fun?

For the price, you wouldn't believe that this is a fully-fledged multiplayer FPS with solid progression, numerous weapons and power-ups, a decent array of vehicles and goddam dinosaurs to gun down! But that's exactly what it is. You probably won't put hundreds of hours into it but it certainly doesn't feel like a £0.79p / $0.99c game. In fact, I reckon this is the single best value for money of any game in my entire collection. I've certainly got my 79p worth and then some - and I still keep coming back for more!

If you like multiplayer FPS and you're not literally penniless, why are you still reading this review? At this price, just buy it already!
Was this review helpful? Yes No Funny