this list is alphabetized

Steam
Bejeweled 3 - PC/X360
Danganronpa: Trigger Happy Havoc
Danganronpa 2: Goodbye Despair
Danganronpa V3: Killing Harmony
Doki-Doki Literature Club! (100%)
Feeding Frenzy
Feeding Frenzy 2: Shipwreck Showdown
Five Nights at Freddy’s (100%)
Five Nights at Freddy’s 2 (100%)
Five Nights at Freddy’s 3 (100%)
Five Nights at Freddy’s 4 (Four Stars)
Five Nights at Freddy’s: Sister Location (Three Stars)
FNAF World
Freddy Fazbear’s Pizzeria Simulator
Half-Life
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two
Insaniquarium Deluxe
Left 4 Dead
Luxor HD (100%)
Luxor: Amun Rising HD
Luxor 3
Luxor: Quest for the Afterlife
OLDTV
Plants vs. Zombies (and the Nintendo DS, iOS, and Xbox 360 editions)
Portal
Portal 2
Terraria
Touhou 5: Mystic Square
Touhou 6: Embodiment of Scarlet Devil
Touhou 7: Perfect Cherry Blossom
Touhou 8: Imperishable Night
Touhou 9: Phantasmagoria of Flower View
Touhou 10: Mountain of Faith
Touhou 11: Subterranean Animism
Touhou 12: Unidentified Fantastic Object
Touhou 13: Ten Desires
Touhou 14: Double-Dealing Character
Touhou 15: Legacy of Lunatic Kingdom
Touhou 16: Hidden Star in Four Seasons
Touhou 17: Wily Beast and Weakest Creature
Touhou 18: Unconnected Marketeers
Touhou Fantastic Danmaku Festival
Touhou Fantastic Danmaku Festival 2
Typer Shark! Deluxe
Undertale
Zuma Deluxe
Zuma’s Revenge (100%) (and the Nintendo DS and Xbox 360 editions)

Non-Steam/PC
Genshin Impact
Honkai Impact 3rd
Honkai: Star Rail
Mario Kart 7 (Nintendo 3DS)
Pokémon FireRed (Game Boy Advance)
Pokémon SoulSilver (Nintendo DS)
Pokémon Alpha Sapphire (Nintendo 3DS)
Pokémon Platinum (Nintendo DS)
Pokémon White (Nintendo DS)
Pokémon White 2 (Nintendo DS)
Pokémon X (Nintendo 3DS)
Trauma Center: Under the Knife (Nintendo DS)
Trauma Center: Second Opinion (Wii)