From publisher blurb:
Tired of your players metagaming and max/mining instead of roleplaying? Well, KUP is the system for you. KUP is an RPG that places the game with the GM and the roleplaying with the players. The KUP system goes beyond other games because players are prevented from knowing their current active stats or bonuses. All of this is handled by the GM. Instead, players are provided with descriptive information by the GM.
KUP offers players and GMs the opportunity to roleplay more by freeing them of the confines of other systems. Morality and character background are built into the mechanics of the game. The system provides players with a freeform magic system. Combat is more than just lowering hit points. Instead, damage affects characters as they take damage. Further, all characters have a state of mind that affects characters actions and can even lead to unpredictable outcomes.