Fossilfuel

Fossilfuel

Released Aug 2021

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!

71% positive · 168 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence

Where to buy

Steam $14.99
Can't confirm — worth a look
We couldn't confirm these stores carry this game.
Green Man Gaming Steam key Search IndieGala Steam key Search
Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site

Evaluation

Fossilfuel launched on August 20, 2021 and received one DLC — Raptor Isolation — on October 28, 2021. That DLC is the only post-launch content for this game, and it has shipped. No further DLC is listed on the store page. The developer's attention has since moved on to sequels. Fossilfuel 2 was announced in April 2023 and released on February 20, 2024. A Fossilfuel 3 demo was made available on Steam as of May 29, 2026, with the third entry currently in a wishlist/pre-release stage. A May 2026 post from the developer frames the original Fossilfuel as a starting point of a now multi-game series, but makes no mention of any new content for the original game. The only update to the base game after launch was a multiplayer removal patch in October 2023, and the preceding post-launch history consists entirely of bug fix and minor feature patches. There are no unreleased DLC listings, no roadmap or announcement of additional content, and no developer statement suggesting further updates are planned for the original game. With the series now on its third entry, the original Fossilfuel is a complete, standalone product.
Evidence
Developer post celebrating Fossilfuel's upcoming fifth anniversary and announcing the Fossilfuel 3 demo. No mention of new content for the original game; focus is entirely on the sequel series.
news post · May 29, 2026 source development ending
high
Raptor Isolation DLC released, expanding the horror aspect of the original game with a new area and multiple endings.
news post · Oct 28, 2021 source content shipped
high

Content

1 of 1 released · no outstanding content
Released
Oct 2021

Media

Details

Publisher
DangerousBob Studio LLC
Achievements
28
Platform
Windows
Controller
full support
Steam Deck
Playable
Players
Single-player

About this game

CAUTION: THIS GAME IS HARD AND FULL OF JUMP SCARES!

OPERATION FOSSILFUEL

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...

JURASSIC SURVIVAL HORROR

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.

MULTI ENDINGS

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.

POWER TRIP

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.

CHALLENGING ENEMIES

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.

Fossilfuel

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)

Last evaluated Jun 23, 2026
Something about this evaluation looks wrong Report illegal or harmful content