​Microsoft's recently announced Game Room lets you play classic arcade games in a virtual arcade space. The Xbox 360 already has another feature that lets you play classic arcade games. You may have heard of it. It's called Xbox Live Arcade. XBLA has seen several classic arcade games in the past, but according to Microsoft, those previously released classics won't be compatible with Game Room. I reached out to Microsoft on the subject, and a PR contact explained that the Game Room games are 100% arcade accurate, while the XBLA games typically feature exclusive enhancements like improved graphics.

I've checked the list of Game Room titles against the list of retro games released for XBLA, and fortunately there isn't a lot of overlap. Centipede is available on XBLA and has been announced for Game Room, so if you have it for XBLA and want it in your Game Room, you'll have to buy it twice. Maybe you really, really love Centipede.