Aoe2 more than 20 years and still going, fuck there are even tournaments for it
Age of Empire 2, Diablo 2, red alert 2... Lot of 2s
Oh look, another idiot OP.
Civ5, Counter-Strike, Starcraft2, Fallout: New Vegas.
Kotor has an active community, Battle For Middle Earth, Skyrim etc.
Aaand there are still people playing Fallout 1&2 and solitaire
Heroes of might and magic
Ever heard of Old School RuneScape?
Do people still play WoW? If i would play it today it would be by far my longest running game
Heroes of Might and Magic III - 1999, community maintains it even today. TF2 - 2007?..