Super Mario Maker 2
Mario 3
Cuphead
Completed on stream: Abzu, Antichamber, Bendy and the Ink Machine (Ch 1 -4), Breath of the Wild, Celeste, Darkest Dungeon, Deltarune (Ch 1), Earthbound, Gris, Hollow Knight, Hotline Miami, Minecraft (Ender Dragon) MegaMan X, Ori and the Blind Forest, Rain World, Rime, Sonic & Knuckles, Subnautica, Super Mario Bros. 1, 2, & 3, Super Mario Odyssey, Super Mario RPG, Super Mario World, Super Mario World 2: Yoshi's Island, The Stanley Parable, Undertale, Untitled Goose Game
Most commands available in chat are listed here.