Free games like .synth_protocol
Below are 9 free-to-play Steam games similar to .synth_protocol, 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 .synth_protocol page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action and Indie with .synth_protocol.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Bongo Cat
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Indie with .synth_protocol.
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?
- 3
Indigo Park: Chapter 1
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action and Indie with .synth_protocol.
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.
- 4
STRAFTAT
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action with .synth_protocol.
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.
- 5
The Looker
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Indie with .synth_protocol.
You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.
- 6
Counter-Strike:Global Offensive
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action with .synth_protocol.
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.).
- 7
The Expendabros
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action and Indie with .synth_protocol.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 8
The Lab
Free-to-play alternative to .synth_protocol — 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!
- 9
Gemini: Binary Conflict
Free-to-play alternative to .synth_protocol — no purchase or trial window. Shares Action and Indie with .synth_protocol.
‘Gemini: Binary Conflict’ is a multiplayer, class based, first person shooter set in the midst of an interplanetary war. The game features a colourful visual style, unconventional weaponry, equipment, armour, class roles and modes, to provide a subtle mix of familiar and unusual game mechanics.