About two years' ago, we were in Tijuana, and they had what they called a "Bingo" hall filled with about 120 of those japanese style slot machines, but no table games. $5 US got us about 35,000 "credits", which kept us entertained for about an hour. Be sure not to leave your machine unattended, or a floor worker will come by and erase your credits while you are in the restroom.