Free games like Onset
Below are 8 free-to-play Steam games similar to Onset, 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 Onset page.
Ranked picks
- 1
Bongo Cat
Free-to-play alternative to Onset — no purchase or trial window. Shares Indie and Simulation with Onset.
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?
- 2
The Expendabros
Free-to-play alternative to Onset — no purchase or trial window. Shares Action and Indie with Onset.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 3
The Lab
Free-to-play alternative to Onset — 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!
- 4
SuchArt: Creative Space
Free-to-play alternative to Onset — no purchase or trial window. Shares Action and Indie with Onset.
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!
- 5
The Riftbreaker: Prologue
Free-to-play alternative to Onset — no purchase or trial window. Shares Action and Indie with Onset.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 6
Jigsaw Puzzle Dreams
Free-to-play alternative to Onset — no purchase or trial window. Shares Indie with Onset.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!
- 7
The Last Sovereign
Free-to-play alternative to Onset — no purchase or trial window. Shares Indie and RPG with Onset.
Explore a world torn between armies of lust and purity in which everything is more complex than it seems, deciding the fate of nations through might, politics, and finance. Every decision matters in an intricate saga that tracks thousands of variables.
- 8
Dota 2
Free-to-play alternative to Onset — no purchase or trial window. Shares Action with Onset.
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.