Solar 2

Solar 2 is a physics-based sandbox where you start as an asteroid and grow by absorbing mass. Collide with smaller objects to increase size, eventually becoming a planet, then a star, then a black hole. The universe shifts around your choices—other celestial bodies orbit you, civilizations develop on your planets, and rival systems compete for resources. You can nurture life or destroy it, defend against attacks from alien empires, or consume everything in reach. No fixed objectives exist; progression follows whatever scale of cosmic entity you want to become. The abstract visual style keeps focus on gravitational mechanics rather than detailed surfaces. Short sessions work fine since there's no story to track.