Stick One is a 2 player game that is fun to play when your on a plane, car, or train with your family. In Stick One, the objective is to not tap the last stick. You may tap any stick in the row as long as theyre next to each other.
Playing the game is best in Landscape Mode since the sticks look nicer turned the way theyre side by side.
A full instructions page explains the whole concept. Please visit that to understand the game. Instructions has pictures in case you dont understand.