Submarings is retro cool fun! No batteries. No Wi-Fi. No Problem! Recover all the Submarings using fluid dynamics. This challenging game is endless fun as you try to get all the rings on the pegs through the power of water! When you push the buttons on the base, the force from your finger creates water pressure within the tank which is proportional to how hard you press the buttons (pressure = force/area). Challenge your friends and family to see if they can add the same color rings on each peg!