While the Koopa goes out for a bit to use the restroom, the Mario Bros, along with Princess Peach all swoop in, killing the Goombas at the party and enslaving the survivors.
The series begins when one Goomba was having a birthday party along with several other Goombas and his best friend, a single Koopa Troopa. It is a Perspective Flip showing Bowser's Mooks as the main characters and the otherwise cheerful Mario as the Big Bad. A Koopa's Revenge is a series of Adobe Flash platformers by based on the Super Mario Bros. A game where you can barbecue Yoshis alive.