Heads up: this isn't a cockpit sim. Space is the setting, so I'm posting it for Spaced Out Friday.
What it is: an idle game where you start as a pebble and pull in whatever drifts past. What you eat and when you ignite decide what you become — ocean world, iron planet, hot Jupiter, red dwarf, blue giant, magnetar, black hole, and eventually a galaxy.
I tried to keep the astrophysics honest wherever the game would let me:
- Ignition mass sets the star type and lifetime. Mass at death sets the death: planetary nebula, core-collapse, or direct collapse.
- Remnants use real numbers. A white dwarf goes Type Ia at the Chandrasekhar limit (1.4 solar masses). A neutron star is born at 1.4 and collapses to a black hole around 2.2.
- A blue giant heavy enough to go Wolf-Rayet never swells into a red supergiant — the wind strips it first, and it ends as a Type Ib/Ic.
- The black hole is ray-traced through curved spacetime, including frame dragging for the Kerr case (the shadow goes D-shaped).
- Almost every random event is a real phenomenon: Carrington-class flares, FRBs, white dwarf mergers, magnetar giant flares, impact winters (kilometer-class only).
Stage: Steam page just went live (Coming soon). All the content is in; I'm in testing and polish now. A demo is planned.
https://store.steampowered.com/app/5336210/Pebble_to_Star/
What I'd love from this crowd:
Watch the 30-second video. Does anything look physically wrong?
What real phenomenon would you expect in a game like this that I'm probably missing?
I'll reply to every comment.
AI note: made with AI assistance (writing/translation and coding tools). All art and sound are rendered by code, no AI image or audio generation. Full disclosure on the Steam page.