Orbital Physics Simulator (2026)

Developer: Nathan Schmitt
Publisher: Blue Screen Studios
Platforms: Windows, Linux
Genres: Indie, Simulation, Free To Play
Rating: 4.5 of 5, 19 player ratings
Typical playtime: about 28 minutes
Where to get it: Steam

The 3D catalog: game boxes on wooden shelves, with the cat sitting at the counter next to its greeting.

The catalog in 3D

The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.

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How it feels

A deliberate, self-directed sandbox for quietly calculating and executing orbital maneuvers in a realistic Newtonian solar system.

realisticeducationalmathmaticalrelaxingpreciseself-directedcalculated

What players say

Players praise the accurate orbital mechanics and relativistic effects but warn the controls and tiny text make it tough to get into. Some find the sandbox rewarding, others hit a white screen or a bug where nothing loads.

Screenshots

More games like this

This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? You can browse by platform and genre, or take this one into the 3D catalog and ask the Catbot for something closer.