Bull's-Eye Washers Game

The idea is simple. From 20' away, you have to "simply" toss a 2-5/8"-dia. weighted washer into a 4-1/4"-dia. plastic cup that sits inside a hardwood box. How hard can that be? You get three points if it lands in the cup, and one point if it lands in the box around the cup...but the team that wins each round only earns the two-teams' point differential for that round; 21 points wins the match. Hardwood boxes snap together to create the game's storage case. For 2 or 4 players, ages 8 and up.