The infested marine was replaced by the broodling as the product of the infestor's special abilities in May 2008. However, they were again produced from infested terran buildings by the next month. By BlizzCon 2008 they were being produced directly by infestors as an ability. Infested terrans were removed by the start of StarCraft II beta but were added to the game again in the first beta patch. They were transferred to the overseer (and their cost greatly increased) in beta patch 13. They were returned to the infestor in patch 16.