Learning Resources Sum Swamp Addition & Subtraction Game. This Learning Resources award winning game is perfect for reinforcing addition and subtraction skills. Swamp-themed board game focuses on numbers 0-6 and is designed for 2-4 players. Ideal for the whole family, the first player rolls all three dice and creates a number sentence. The player then moves ahead the sum value. Beware of the Endless Loop and other game play spaces. The first player to reach the finish space is the winner! Includes two number dice and one operational die. Board measures 33cm W x 22cm L. Suitable for ages 5+