I sometimes still pop in Breakout for my old Atari 2600.
And for some of the more new games I play. I still enjoy popping in the Adventures of Lolo games to my old NES.
I honestly play more old games than new games in general. Though those are the oldest games I had from my childhood that I still play. I spend more time ordering old games and importing games than playing new ones. It's often cheaper and it feels like a treasure to get old stuff, indie stuff, and imported stuff. New games can always wait. That's who I am, a weeaboo, retro gamer, import gamer, indie gamer, and yaoi fangirl.
The game system I play most often is undoubtedly the Super Famicom. It's not as retro as the original Famicom, NES, Atari 2600 or ect. But the system and games I play the most of aren't exactly XBOX360 or PlayStation 3 games. Even though I own both, and an enthusiast gaming computer with a 2500K and HD 6950.
There's just nothing like breaking out the Super Famicom and playing some games to study Japanese. I have an old SD TV in one of the guest rooms of my house just dedicated to retro games and old PC parts that I hook my old A/V systems into.