All of these you can find on XBLA, PSN, and Steam, save one or two.
Braid, LIMBO, SuperMeatBoy, Outland, Trials HD, Shadow Complex, they're all fantastic and drastically different from one another. That's the thing about 2D gaming, they need to bring different experiences to make up for their lack of a 3rd dimension.
This is a link to a site called Virtual NES. Basically they put a bunch of old NES games on to this online emulator so you can play them right on your computer like a flash game here.
[url=http://http://www.virtualnes.com/]
Enjoy, but it doesn't run very well on some computers and may be laggy.
What kind of 2d games we talking about here. Games like mario games like fighting etc. like Dungeons of Dreadmor or we talking bout racing games like trials 2.
There coming out with Rayman Origins Vessel Dustforce CaveStory Shank 2 World Of Goo Street Fighter IV Bionic Commando: Rearmed
