Test your knowledge of geometry, playing Sketch Up on your iPhone, iPad or iPod touch! Your challenge is to create a huge geometric shape in the center of the board, merging small ones with your pencil. Don’t hesitate to use preview hub to see what shape will be created in advance. You must develop your own strategy, if you do not want to come to a standstill! Smash two different figures together to make a new, bigger one, then connect it with the other shape and you will get right what you need! For best results put your device on a flat surface and use all your fingers at once! Have fun!