Topic: General Gaming /
SolaSim (THE Solar system sandbox)
1.Spawn asteroids with special materials, not moons. Materials like ice, rock and (I don’t know how to tell) gas leak. Ice would be comets with tails. At red zone it melts. Rocks are just asteroids. Gas leak just some gas. If many rocks combine it will be first a dwarf planet, then normal planet. If gas leak combine it will be gas giant. For exoplanet you need all three things: Planet with atmosphere and water. Then will be a chance that will be people in the planet.
2.Planet with people will launch spacecraft: Voyagers (For searching planets) and Spaceships (For making life in uninhabited exoplanets).
3.Object distance meter. Press first planet, then second. And see distance between planets meter (in kilometers or in AU).