Up Up Hippo is a smartphone game controlled not by a tap of your finger but by a squeeze of a real plastic bottle. By squeezing a bottle (or a few) you will make Hippo move, fly and sail. The game aims at teaching children to crush plastic bottle before recycling. Available for iOS and Android.
More info: upuphippo.com
Squeeze a plastic bottle to help Hippo move
Before the game
After the game
