The player can attack every planet an unlimited number of times until it is finally destroyed. A planet counts as destroyed if its remaining population has been reduced to 0. However, it's not possible to attack a planet if the player cannot gain even 1 [[Gene Strands|Gene Strand]] or if he has less than 1 [[Bacteria]].
Killing a percentage of a planet's population earns [[Gene Strands]].
If the player has already unlocked [[Minerals]], completely destroying a planet also has a chance to obtain a [[Mineral]] native to the current planet.
Destroying planets also unlocks new game mechanics and [[Upgrades|upgrades]].