Nettles on 02 February 2015
I would say Starcraft : Brood war from blizzard.
From what i recall the last patch came out in 2009, 11 years after the games original release.
Plus the original Bnet servers are still up a full 17 years after the game came out letting you play online free.
Newer games it is harder to select due to all the DLC garbage that comes out nowdays.Going back 15 years maybe Shenmue.
