OSC admission is pricey, but I got in with the student rate ($16) so the pill was a bit easier to swallow. It was a good experience. I was a '90s kid so I got to see (and play) a lot of old consoles which I'd never even heard of, let alone played before.
They have some cool set-ups as well, like Child of Eden (Kinect controlled) projected on a big wall, an old playable vertical racing game projected on a screen near the entrance, and a special nook just for holding Johann Sebastian Joust matches (they have like 8 PS Move controllers). Unfortunately some of the set-ups aren't functioning, and in some cases even those which are have faulty controllers or another hindrance. I was most impressed really with the selection of Japanese games which were never released overseas. Not a ton of them, but just getting a chance to play that stuff made my day.
If at all possible, I would recommend trying to find a time when it'd be less crowded -- yesterday afternoon there were a whole bunch of school groups crowding the place; even so, it wasn't that busy, but you do sometimes not get a chance to try out a game you'd like to. I think the exhibition's on until September 2nd.
