Aces & Eights
A Wild West RPG using an original system¸ set in an alternate history of the American West. Combat uses a ""shot clock"" with a transparent cover and a silhouette of the target¸ with location determined by a 1d20 roll with modifiers and a card draw. The system also includes roll-over percentile skill tests¸ where skills start at 100 and go down to 5 for mastery. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"