xbox 360 controller works on every game I want to play (aside from stuff like Divinity Original Sin). As far as unfamiliar titles I just purchased the Double Dragon Trilogy, Final Fantasy 3, and FF7. Earlier I've gotten nice rehashes of retro classics like Ducktails (I honestly played this game until I beat it without stopping it was that awesome) Sega Genesis and Mega Drive Classics, METAL SLUG 3!!!, a new version of Gauntlet, Worms, Worms Armageddon, Wizardy 6, 7, and 8, Ys 1 and 2, and there's even Ikaruga.
I'm not a fan of not having a physical copy of the video game but the daily sales and the holiday sales cut prices so low that when a game I want goes on sale its usually under five dollars, and I don't mind not having a physical copy when the game is almost free!
steering back on track...........
There are starting to be some snk stuff.....
King of Fighters 98 is there as well as a steam edition (ask Grindspine about them, I think he's got them) and Metal Slug 3 and Metal Slug X and I really don't know much about it but there's two 1C collections that's SNK tagged as a publisher