Been playing since the Sega Master System and i can say with 100% certainty the best game ever happens to be a free game, WAR THUNDER. I don't binge quite as hard as i used to but i still get the bug when i pause for too long.
Mickey Mouscapades(NES)
The Little Mermaid(NES)
Super Mario World(SNES)
Zombies ate my neighbors(SNES)
Super Metroid(SNES)
Super Mario RPG(SNES)
Mario Paint(SNES)
Zelda:lttp(snes)
Chrono Trigger(SNES)
YoshisIsland(SNES)
Blast Corps(N64)
Snowboard kids(n64)
Starfox64(N64)
Silent hill 2(ps2)
Starcraft:bw(pc)
Warcraft 3 (pc)
Pokémon Blue/red(Game boy)
What remains of edith finch(pc)
Portal 2(xbox 360)
Tetris(all platforms)
Paper Mario the 1000 year door(gc)
I don't really have time to play new games as an adult : (
Doom
Civilization 2
Elite (the original)
X-Wing
Borderlands (and its variants)
Far Cry 3
Metal Gear Solid 5
Apex Legends
Call of Duty (particularly warzone and dmz)
civ 1 & 2
colonisation
pirates!
dungeon keeper
chaos engine
GOAL! by dino dini
diablo 1
super smash bros n64 (original ONLY)
NBA hangtime (i think this is basically nba jam for the n64)
goldeneye
single player
Xenoblade Chronicles Trilogy
Final Fantasy 6, 7, 8, 9 , X, XII, XIV and XVI
Dragon Quest XI
Final Fantasy Tactics
Chrono Trigger
Breath of fire 3 and 4
Zelda Link to the Past
Zelda Link’s awakening
Zelda Tears of the kingdom
Xenogears
Star Ocean 2nd Story
Lunar 1 and 2
Castlevania Symphony of the Night
Suikoden 2
Undertale
Terraria (could count as multiplayer too)
Secret of Evermore
Secret of Mana
Bloodborne... hard to believe the game is going to turn 10 years old soon. Perfect blend of atmosphere, story telling, unconventional narrative structure, and really fun gameplay.
The last game I played that I had an emotional response to was Subnautica. After beating it for the very first time, I started a new save and played through again.
By hours, I think I have about 300 days played on World of Warcraft. Got really burnt out on Dragonflight though, don't like how progress would reset every major patch.
I wouldn't say it's a great game but on Steam, I've put the most hours into The Binding of Isaac. This is followed by Rimworld which is about to be passed by Factorio and then Slay the Spire is a close 4th.