Duel1st Edition

At its core, Duel can be played within 5 minutes, as it is played with just 1 model per player. The highly flexible ruleset allows you to make Duel your game, though, and add (or leave out) stuff you know from other games: Cover, running, Heroes with abilities and followers, magic, non combat abilities et altri. Throw in a bidding mechanic for dierolls, where you have to balance the risk versus the reward - with the price being as high as the death of a fighter.