You build the game! Assembly is only half the fun as you build your grid and bumpers brick by brick. Then bump drop and block. Move the bumpers and drop in your checker! Where will it go? Straight on down or ricochet around? The bumpers add another level of fun ? because you never know where your checker will go! Got 4-in-a-row? You win! Play it our way or change things up! Rearrange the bumpers or put a twist on the rules to send the game in a whole new direction! Build your game then block ?n bump to 4-in-a-row! Bumpers send checkers in different directions! Includes 158 building parts (110 U-BUILD bricks and 48 construction pins) 21 red checkers 21 yellow checkers 1 gameboard with stand assembly guide and game guide. For 2 players. Ages 6 and up.