Free games like Trigonometric Equations
Below are 8 free-to-play Steam games similar to Trigonometric Equations, 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 Trigonometric Equations page.
Ranked picks
- 1

Doki Doki Literature Club!
Free-to-play alternative to Trigonometric Equations — no purchase or trial window. Shares Indie and Casual with Trigonometric Equations.
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 Trigonometric Equations — no purchase or trial window. Shares Action with Trigonometric Equations.
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 Trigonometric Equations — no purchase or trial window. Shares Indie with Trigonometric Equations.
Helltaker is a short game about sharply dressed demon girls.
- 4

Ultimate Custom Night
Free-to-play alternative to Trigonometric Equations — no purchase or trial window. Shares Action and Indie with Trigonometric Equations.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 5

Bongo Cat
Free-to-play alternative to Trigonometric Equations — no purchase or trial window. Shares Indie with Trigonometric Equations.
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 Trigonometric Equations — no purchase or trial window. Shares Indie with Trigonometric Equations.
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 Trigonometric Equations — no purchase or trial window. Shares Indie and Casual with Trigonometric Equations.
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 Trigonometric Equations — no purchase or trial window. Shares Action and Indie with Trigonometric Equations.
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.