First click the greeen flag to start. Clicking the space bar will make your bird go upwards, by default it is going down. The object of the game is to not touch any of the green poles as doing so will end the game. Your score is based on how long you can survive. Note that you have 2 seconds of invulnerability at the start of the game. (During the small time where your bird is purple and yellow.)
Inspired by the game Flappybird on the Iphone appstore.