Free games like G Prime
Below are 8 free-to-play Steam games similar to G Prime, 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 G Prime page.
Ranked picks
- 1
Steam Engine Simulator
Free-to-play alternative to G Prime — no purchase or trial window. Shares Simulation with G Prime.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 2
Learn to Fly 3
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie with G Prime.
Build your spaceship from scratch, earn funds and invest them into building a bigger, better spaceship as you try and fly your way up to space!
- 3
Nimbatus - Drone Creator
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Use the Nimbatus Drone Creator to construct physically simulated drones and try them out in a virtual testing environment. Do you have what it takes to become a drone engineer?
- 4
Machizzle
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Physics bending VR puzzle game - get your ball to the goal, by obeying the laws of physics. Or bending them to your will.
- 5
Lonely Astronaut
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Pilot the corpse of a long-abandoned astronaut floating in a cosmic graveyard in this one-button arcade game. In the process, you might find out something about the human condition. But probably not.
- 6
Orbit-X
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Launch a rocket. Extend the Antenna. Set your internet service price and start making money. Oh and shoot down asteroids if they threaten your satellites.
- 7
The Howler
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Use gravity, tension, and wind currents to get your hot air balloon to its destination, dropping off cargo on your way, in this ultra-challenging physics-based game. All art used in the Howler was meticulously created by classically-trained experienced painters.
- 8
Interkosmos
Free-to-play alternative to G Prime — no purchase or trial window. Shares Indie and Simulation with G Prime.
Interkosmos is an arcady astronaut adventure in VR. Brace yourself for a rush of hectic gameplay to challenge your inner cosmonaut, and a fun story full of twists and Cold War absurdities.