Free games like ONYX2D
Below are 13 free-to-play Steam games similar to ONYX2D, 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 ONYX2D page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Bongo Cat
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Indie with ONYX2D.
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 ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
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 ONYX2D — no purchase or trial window. Shares Action with ONYX2D.
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
Counter-Strike:Global Offensive
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action with ONYX2D.
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.).
- 6
Awaria
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Awaria is a short game about working in haunted maintenance tunnels.
- 7
Grimm's Hollow
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Indie and RPG with ONYX2D.
A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.
- 8
The Expendabros
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 9
Curve Fever Pro
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Curve Fever is a high-energy multiplayer snake-like game with powers, easy to learn and hard to master. Steer your ship, avoid deadly trails, steal points, and outplay up to 9 opponents in fast-paced online arenas. Climb the ranked ladder, level up, and unlock new powers.
- 10
CLOUD BREACH
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Eliminate. Hack. Defend. A tactical multiplayer FPS where split-second decisions decide who can walk away with victory.
- 11
Raiders Rise
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Explore hostile planets, face endless hordes of devourers, collect crystals, and upgrade your equipment. Choose the hero that best suits your playstyle, cooperate with your allies to survive… or betray the other team at the perfect moment and claim victory.
- 12
Spheromania
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
Bounce, blast, and outlast in Spheromania. A fast-paced arena shooter where drones duel with blasters, mines, and mid-air hops. Manage your energy, dodge the shrinking arena, and be the last sphere hovering. Solo mode or online multiplayer.
- 13
Ultimate Multiplayer Survival Engine
Free-to-play alternative to ONYX2D — no purchase or trial window. Shares Action and Indie with ONYX2D.
The only goal is survival. Explore a dangerous world, gather resources, craft equipment, build shelter, and fight to stay alive. Whether alone or with friends, every decision could mean the difference between thriving and losing everything.