Use arrow keys, WASD or mobile to move the animal on the screen. Every 5 seconds, the animal changes. The animal will create a string of replicas of itself behind. Hold n or press dat button to stop creating the string temporarily and space or press dat button to delete the whole string. You can just plain draw with this or you can play a game. In the game, you have 20 seconds to cover as much of a circle as possible. When your time is up, you have to wait a few seconds for the computer to calculate your score. You cannot click menu when you are waiting. Your score is the number of degrees covered.
Me high score is 360 Credit to @irgopats_2 for original.