Well I take that back. We also go to the shop a World of Disney (I think that's what it's called) and Rextrantasaurous (I don't think I spelled it right but I hope u get what I mean).
Actually it isn't 'free'
If you have the 'Magic Your Way Tickets with Water Park Fun & More Option' on your tickets, then a certain number of visits is included (total includes access to the golf courses and water parks from memory). Otherwise, entry is like $45 which is quite expensive for a game room IMO.
It looks fun though, but I'd rather be in the parks!