๐น๏ธ Commander Keen 3: Keen Must Die!
Commander Keen has already foiled the Vorticons' plans to destroy Earth. Now he heads to their home planet in order to confront the Grand Intellect: a mysterious leader who enslaved all the Vorticons and forced them to carry out his evil deeds. But before Keen reaches him, he must get through numerous Vorticon cities whose mind-controlled residents all received one order from the Grand Intellect: "Keen must die!"