Free games like Biotoxin: The Dark Days
Below are 9 free-to-play Steam games similar to Biotoxin: The Dark Days, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Biotoxin: The Dark Days page.
Ranked picks
- 1
Doki Doki Literature Club!
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Indie with Biotoxin: The Dark Days.
The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.
- 2
Indigo Park: Chapter 1
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
- 3
STRAFTAT
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action with Biotoxin: The Dark Days.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
- 4
The Expendabros
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 5
Iron Snout
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
- 6
Star Fetchers
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
The introduction to a wild ride with gangsters and deep state conspiracy theories
- 7
The Supper
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Indie and Adventure with Biotoxin: The Dark Days.
The Supper is a short adventure game about the darkest side of the human soul. Ms. Appleton was always a wellspring of kindness, until The Voice started talking to her.
- 8
Princess Remedy in a World of Hurt
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
Remedy, a recent graduate from the Saturnian healing school, must descend to Hurtland and use her powers to heal everyone from stray ducks to dark lords, and finally cure the ailing Prince Hingst. It's a short, whimsical adventure with plenty of heart(s).
- 9
Shrouded in Sanity: Freebirth
Free-to-play alternative to Biotoxin: The Dark Days — no purchase or trial window. Shares Action and Indie with Biotoxin: The Dark Days.
Free version of Shrouded in Sanity. Discover the secrets of the estate, as you look for answers among the violent inhabitants. Servants roaming the halls will attack on sight, for a strange and repelling madness took hold... one rooted in a deeper understanding of cosmic insignificance.