In Steal a Brainrot, the goal is to collect, manage, and protect brainrots while building the most profitable base. Players can earn money passively by placing brainrots in their homes or actively by exploring and acquiring rare characters. The game features multiple house options, allowing players to customize their base and maximize income potential. Each brainrot has a rarity level, ranging from common to epic, and collecting full sets of rarer brainrots unlocks income multipliers, rewarding strategic planning.