Gin Rummy Pro - Version 1.1 If you're a Gin Rummy fan, check out Gin Rummy Pro. This 32-bit game offers a colorful interface with very large cards. Three game modes are included: Gin, Oklahoma, and Maximum knock = 10, each with four levels of play. You can decide the number of points you have to reach from preconfigured amounts, and choose that, if your first upcard is Ace, you have to Gin or the maximum knock = 1. Other options let you pick from an English or French interface, select from five speeds, and toggle on/off a suggestion feature.