Ok Social. Top 9 favorite games.
I think I already posted something like this a few weeks ago, though...
In no order, top 9:
Re-Volt (PC)
Age of Empires I/II (PC)
Kirby's Dreamland 3 (SNES)
Rhythm Heaven series (GBA onward)
Twinkle Star Sprites - multiplayer especially (NEO GEO)
Alley Cat (PC DOS)
The Legend of Zelda Majora's Mask (N64)
Super Mario Sunshine (GCN)
Hollow Knight (PC)
Honorable mentions (still no order):
Worms Armageddon (PC)
Zelda Link's Awakening (GB/GBC)
Sonic 1 8 bit (SMS)
Sonic Advance 2 (GBA)
Sonic Adventure 2 (GCN)
Gran Turismo series (PSX onward)
Assetto Corsa/Richard Burns Rally (PC with force feedback wheel)
Carmageddon 2/TDR 2000 (PC)
F-Zero GP Legend (GBA)
Mario Kart Super Circuits (GBA)
Super Mario Land 2 (GB)
Warioland series (GB onward)
Super Mario Bros 3 - All Stars version + Battle mode (SNES)
Super Mario World (GBA version)
The Witness (PC) - but it really has zero replay value, it's only good the first time
Baba is You (PC)
Wario Ware D.I.Y. - for the editor, not for the game itself (DS)
Mario vs DK Miniland Mayhem (DS)
Prof. Layton and the Curious Village (DS)
Puzzle Bobble (several platforms, mostly SNES)
Puzzle Games such as Sokoban, Picross and Minesweeper (several platforms)
Bomberman series and clones - multiplayer modes (several platforms)
Mario Kart 64 - Battle mode only (N64)
Unreal Tournament '99 - lan multiplayer (PC)
And probably more...
P.S.: There are some games from the "honorable mentions" section that should have been in the top 9 but I excluded them because there were no free slots.
EDIT: and I can't believe I totally forgot of Super Smash Bros Melee.
EDIT: and the Metroid GBA games, and Prime 2 and Hunters.