Free games like Quantum Odyssey
Below are 8 free-to-play Steam games similar to Quantum Odyssey, 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 Quantum Odyssey page.
Ranked picks
- 1
Helltaker
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie with Quantum Odyssey.
Helltaker is a short game about sharply dressed demon girls.
- 2
Steam Engine Simulator
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Simulation with Quantum Odyssey.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 3
The Lab
Free-to-play alternative to Quantum Odyssey — 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
Z.A.T.O. // I Love the World and Everything In It
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie with Quantum Odyssey.
USSR, 1986. A girl goes missing in the closed city of Vorkuta-5, yet not a soul seems to be concerned. Uncover the mystery behind her disappearance and transmit your signal to the universe.
- 5
The Children of Clay
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie and Simulation with Quantum Odyssey.
The Children of Clay is a short stop motion archeology horror game, where you have to study an ancient artefact and discover its dark secret.
- 6
South Scrimshaw, Part One
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie with Quantum Odyssey.
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.
- 7
The Riftbreaker: Prologue
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie with Quantum Odyssey.
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.
- 8
Mizi NO!
Free-to-play alternative to Quantum Odyssey — no purchase or trial window. Shares Indie with Quantum Odyssey.
In this free 2D puzzle game, you must reassemble broken objects that your cat has knocked over.