Spongebob Krusty Krab's Doomsday is an online game at 43g.Com. You can play Spongebob Krusty Krab's Doomsday in your browser for free.Plankton poisoned the krusty krab's krabby patties with toxic chemicals. The customers that have eaten it went insane. They losing their mind and biting other citizens. Spongebob found a way to heal the infected citizen, with a shock gun! Let's help Spongebob save Bikini bottom!