Let's see...
I play Genesis's Micro Machines with cousins, Neo Geo's Metal Slug 3, Genesis's Streets of Rage (including a remake on PC), and single player I play Jackie Chan's on Turbo Grafix 16 (if you know this system), Gradius 1,2 and 3 on MAME, Gradius V on PS2 (has two player co-op too), SNES's Demon's Crest... oh, don't forget about PC retro games like Commander Keen 5. That game rocks.
Lately many developers started making retro style games on PC too. I see those more than Dark Souls boring kinda games.