At Worlds of Fun in Kansas City, MO they have a indoors wipeout with all sorts of themeing and loud music and whatnot. It's alittle more than the traditional stick a flat ride indoors and play loud music and have some cheap club lighting, but it's pretty good. Others that come to mind usually involve scramblers. Conneaut Lake Park used to have The Ultimate Trip which was just that, a scrambler in the dark with lazers and whatnot, until the roof of the building collapsed destroying everything. Also one park in Seaside, NJ, I think Casino Pier has a similar indoor scrambler with fog, light effects and they blast heavy metal.