From the author's website, "A complete from scratch recreation of Super Mario Bros. with a focus on perfectly imitating the feel the 1985 classic gave us. Then give Mario a portal gun, add puzzle game mechanics from Portal and there you go. And if that wasn't crazy enough, play 4-player coop, with everyone having their own Portal gun!" Website: http://stabyourself.net/mari0/ Video [yt]SaoHMjS04vU[/yt] So it looks pretty great, it plays decently. I mean don't expect perfect smb emulation with a portal gun, its has floatier jumps kind of like a cheap flash recreation but this game is still fun to play and its hilarious to start screwing around with the portals in the smb universe.