I visited Gameworks for the first time on 8/13/11 for a Gaia Online offline event from 3-6PM. We purchased two 2hr game cards and went off to play. I wish I had checked the game floor before we purchased the cards because I was pretty disappointed. Many, many machines were listed as out of service and some of the games that were on didn't function properly. There wasn't a very good selection of games in my opinion. Our second card after an hour started to read as "insufficient funds". At this point we were really overheated from the heat inside the building and kind of pissed off so we just left and decided not to come back again.
I've had more fun at smaller arcades.