Fossilfuel, is a horror action shooter, where the player must fight their way through Jurassic monsters and Super Soldiers, in this multi-ending, adrenaline-fueled cyberpunk experience!
All Reviews:
Mixed (109) - 69% of the 109 user reviews for this game are positive.
Release Date:
Aug 20, 2021

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Buy Fossilfuel Duo Bundle BUNDLE (?)

Includes 2 items: Fossilfuel, Fossilfuel 2


About This Game

Fossilfuel 2 Steam Page, be sure to wishlist and join the community for the upcoming sequel!




Deep under the Great Sitkin Island in Alaska, you find yourself in the heart of one of the greatest scientific research facilities on Earth! Genetic researchers have bred mutant dinosaurs! But things go bad when the base is invaded by shadowy special forces, looking to steal the dino DNA. You grab your guns and your ammo and prepare for a fight...


At its core, Fossilfuel is a survival horror game. The player is trapped in a massive underground facility, Sierra, located in a remote location in Alaska. The player must use their head to find clues and solve puzzles to escape the facility.


The game features several massive maps that the player can play in any way they want. Their decisions will decide the ending of the game. Once the player escapes the depths of Sierra, they are faced with the sprawling landscape that is, the Great Sitkin Island. The main story campaign will be a solid length of around 6 to 10 hours of gameplay depending on your skill level.


Experience a massive arsenal of weapons as you plow through a huge library of enemies. The game features a wide range of weapons that are not just traditional firearms, your standard FPS arsenal of Shotguns and rifles, but also weapons of science fiction! Weapons that can warp physics and crush your enemies' bones in seconds! The game runs on the power of the Unreal Engine, enabling crazy particle effects and physics as well as difficult enemy squad AI that tries to flank the player and calls for reinforcements as the situation dynamically calls for it. Enemy dinosaurs will use all their sense to track the player as well. A Velociraptor on the other side of the base is there...hunting you...always coming.


The game enemies also span into our Homosapien brothers. The enemy soldiers will call for reinforcements, radio ahead to comrades on the other side of the map to prep for the player, talk to each other, provide covering fire, flank manoeuvers, can spot dead comrades, watch and listen for the player to make sounds, and even spot the player clicking on their flashlight. These guys are tough but the player can cut them down with fun weapons like the black hole gun!

The Dinosaur AI is likewise very aggressive. Velociraptors have incredible eyesight and can hear every move you make. They tend to travel in pairs and love to perform flanking maneuvers as well. Raptors, however, are not the only baddies you will encounter. But you will have to play to find out!

Players are encouraged to record, make twitch, or youtube videos about Fossilfuel. Make sure you link to the game if you do so.

A FREE Demo featuring the terrifying introduction level is also on the Steam store.

For Speedrunners and completionists

Fossilfuel features a wide range of achievements. Time and experience are tracked while playing and players will get a rank at the end of the game. High rankings are tied to achievements as well.

Rank S - Finish under 1 hour, with XP over 500
Rank A - Finish under 2 hours
Rank B - Finish under 3 hours
Rank C - Finish under 4 hours
Rank D - Finish over 4 hours

Fossilfuel Demo
Rank S - Finish under 15 minutes, with XP over 75
Rank A - Finish under 20 min
Rank B - Finish under 30 min
Rank C - Finish under 60 min
Rank D - Finish over 60 min

(Note the Demo does not have achievements)

Mature Content Description

The developers describe the content like this:

This game contains scary images in the form of dinosaurs and other dinosaur like monsters. There is mild language and drug references but no sexual content. The target audience of the game is over 13 years of age.

System Requirements

    • OS *: Windows 7 64-bit or later
    • Processor: Quad-core Intel or AMD 2.5 GHz or faster
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GeForce 470 GTX or AMD Radeon 6870 or better
    • DirectX: Version 12
    • Storage: 15 GB available space
    • OS: Windows 10 64-bit or later
    • Processor: Intel core i7-9700k or AMD 3700x or better
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GTX 1080 ti or AMD Radeon 5700 XT or better
    • DirectX: Version 12
    • Storage: 15 GB available space
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

What Curators Say

13 Curators have reviewed this product. Click here to see them.

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