Got a Groupon for half off the all-day passes, so for roughly $80 we got 4 cards. The deal itself was decent, although almost all of the games were some sort of racing game. Many games were broken or not working at full capacity.
If you really want a fun and cheaper gaming experience, check out the Pinball Hall of Fame. It's a few minutes off the Strip on Tropicana Ave, but for only $25, 4 people enjoyed hours of pinball and nostalgic arcade games, and that total price included a snack! Check out the Pinball HOF on Yelp... it's a 5-star place!