Eradicate infested pests! Fly trough the cosmos in Clusterbug, a bullet hell shoot 'em up, and destroy mutated bugs to save their worlds from the mechanical virus that controls their minds. Hiveminds full! Travel from planet to planet to destroy colonies of bugs that have been infected. Each planet has a colony leader. Your task is to destroy them to stop the spread of the virus for good, and save the galaxy from its imminent demise! Pick your butterfly! Your available ships are the only few ships that went through the V.I.M.M (Virus Induced Mechanized Metamorphosis) process, developing them into battle-ready ships specialized in dealing with the infection.