You want some classic retro gaming? Check out this one from Tribute that could be a hit, given everyone's penchant for bashing monsters. It riffs a bit of Ghosts n Goblins and some of the other classics from the sticky floors of the arcades, how many levels and monsters does it remind you of?
The game will arrive in the Autumn and looks to be hitting all the right retro sweet spots. Check it out at GDC if you're at the show.