In no particular order:
Lego Racers
Kirby Air Ride
Undertale
Deltarune
Final Fantasy 7, 8, & 9
Tales of Vesperia, & Graces
Minecraft
Pokemon Snap
Tetris 99
Portal 1 & Portal 2
Half Life, Half Life 2, and episodes 1& 2
Left 4 Dead 1 & 2
Team Fortress 2
Super Mario Odyssey
Super Mario World
Super Mario Bros. 2 & 3
Sonic the Hedgehog 1, 2, & 3
Dead Rising 2
Earthbound, & Mother 3
Scott Pilgrim vs The World: The Game
Halo 1, 2, 3, Reach, & ODST
Need for Speed III: Hot Pursuit
Vib-Ribbon
Animal Crossing: New Leaf
BattleBlock Theater
Sled Storm
Pokemon Ruby/Sapphire, HeartGold/SoulSilver, X/Y, Sun/Moon
The Stanley Parable
Terraria
Starbound
Castle Crashers
Cave Story
Gunbound (original music before they changed it)
Maple Story
Dead Island
Borderlands 2 & 3
Little Big Planet
I MAED A GAM3 W1TH Z0MBIES
Spiral Knights
Poker Night at the Inventory
The Legend of Zelda Ocarina of Time, Majora's Mask, & Breath of the Wild
Super Smash Bros. Ultimate