Free games like Project Subtrahend
Below are 9 free-to-play Steam games similar to Project Subtrahend, 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 Project Subtrahend page.
Ranked picks
- 1
Doki Doki Literature Club!
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie and Casual with Project Subtrahend.
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
Life is Strange - Episode 1
Free-to-play alternative to Project Subtrahend — no purchase or trial window.
Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.
- 3
Helltaker
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie with Project Subtrahend.
Helltaker is a short game about sharply dressed demon girls.
- 4
Ultimate Custom Night
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie with Project Subtrahend.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 5
Bongo Cat
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie with Project Subtrahend.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
- 6
ENA: Dream BBQ
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie with Project Subtrahend.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
- 7
The Murder of Sonic the Hedgehog
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie and Casual with Project Subtrahend.
Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!
- 8
Indigo Park: Chapter 1
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie with Project Subtrahend.
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.
- 9
Psycholonials
Free-to-play alternative to Project Subtrahend — no purchase or trial window. Shares Indie and Casual with Project Subtrahend.
While in communication with supernatural forces, two influencers launch a daring new social media brand.