Alexander Doggus is a wheelchair-using dog who used to be the world’s greatest show dog. Jaded by his exuberant past, Alexander now cares only about his favorite tennis ball. The player guides Alexander through the world using a trackball to roll the in-­game tennis ball, Alexander always following close behind. Created by Sam Klitsner for Eddo Stern’s 171 Worldbuilding class, Alexander Doggus carefully combines 2D and 3D elements to create a richly textured world.