Sky Ace is a 24-hour RPG product from 2005. The game is played with a standard pack of playing cards driving all actions. The first part of the rules describes card handling and rules to drive miniatures tactical combat. The game can be used as a standalone tactical exercise. The second part of the rules describes the integration of the miniatures and card aspects of the game into an ongoing role-playing game experience with a process for character advancement.
However, by far the most interesting aspect of the game is the use of cards to drive combat, etc. The various role-playing elements are traditional and very light-weight.