Free games like beta decay
Below are 9 free-to-play Steam games similar to beta decay, 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 beta decay page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action and Indie with beta decay.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Indigo Park: Chapter 1
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action and Indie with beta decay.
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
Counter-Strike:Global Offensive
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action with beta decay.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 4
The Lab
Free-to-play alternative to beta decay — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 5
93, Kuindzhi
Free-to-play alternative to beta decay — no purchase or trial window. Shares Indie and Adventure with beta decay.
Kuindzhi, 93 is an atmospheric first-person narrative vignette about an 18-year-old boy from Donbas. The story takes us to March 2022, when the world changed forever — into a space where the past, fears, and doubts find their voice.
- 6
DORONKO WANKO
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action and Simulation with beta decay.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 7
SuchArt: Creative Space
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action and Indie with beta decay.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 8
Hello Neighbor Alpha 2
Free-to-play alternative to beta decay — no purchase or trial window. Shares Indie and Adventure with beta decay.
Welcome to Alpha 2 of Hello Neighbor. Play against an advanced, self-learning AI in what eventually became Act 1 of Hello Neighbor - the stealth horror home invasion sim.
- 9
Nomad
Free-to-play alternative to beta decay — no purchase or trial window. Shares Action and Indie with beta decay.
Try and survive in the world of Nomad. Build a base and protect it from raiding players. Scavenge food, weapons and medical supplies across the island. Team up with others and make a base. Make your mark on the world of Nomad.