You are a tiny microbe trying to survive and grow your species in a living, changing ecosystem. You begin in a patch of freshly disturbed soil — loose particles and a few bacteria. Eat, grow, and divide; your offspring swim off on their own while you continue. Around you, the environment evolves: soil structure shifts, bacteria diversify with different effects when consumed, new predators arrive, and hazards like Heliozoans and biofilms emerge. Survive for as long as you can in an increasingly complex world that never stops changing.