We checked this place out mostly for the novelty and admittedly it was a fun diversion but not sure if worth a special trip really. They had some fun old school games likes pac-man and centipede which were fun but the novelty wears off pretty quickly unless you're really into the games. I was ready to leave after about 20 minutes.
I'm sure kids would love it though so might be good if you're in Vegas with the rugrats or an ex-video game-aholic perhaps. Otherwise I'd prolly skip it unless you got extra time to kill and want to get off the craziness of the strip for awhile.