Posted December 20, 2012
Steam doesn't sell a single game that is banned in Japan. Honestly, I don't know why people keep thinking games must be banned here simply because its publisher is an idiot and doesn't want our money. (There are in fact, very very few banned games here, and I can't even name one of the top of my head as it's such a rare occurrence).
SirPrimalform: Most of them should be fine. You might run into occasional problems with Steam if you move to a country where a game is banned (maybe Germany or Japan).
However, Valve are known to IP block games (regardless of their legality) in a number of regions, with no discernible reason and will generally deny doing as such.