I play my Atari 2600 games,coleco and mame arcade games all the time Berzerk Mspacman pacman Burgertime Ahhhhh lots of fun
Without a doubt, Borderlands 2. There's so much content out there for it, by the time you finish it, you're ready to start from the beginning again!
I'm a sucker for fps games: Half life 1 and 2; Thief 1, 2, and 3; No One Lives Forever 1 and 2; System Shock 2, Deus Ex, etc. And love any game that lets me build: Roller Coaster Tycoon 3, Railroad Tycoon 2, SimCity 2000, SimCity 3000, OpenTTD, Zoo Tycoon, Sims 3 (rarely play, just build houses and worlds). Honorable mention to Morrowind. Oh, the hours I spent in that game, plus its Construction Set. But, as Thomas Wolfe wrote, "You can't go home again"; it's been years since I played because no matter what character I choose or where I go it's "been there, done that". But the memories are like those endless summers long ago with my best friend.
Warframe has become almost I say almost with leniency a daily event ... the sorte and then building new things and leveling them .. OMG it is such a farming game.. really aka xik4 there