Move your hebi around the screen to collect spiky objects. There are three different colors shown in the top left hand corner with numbers below them. You must have more than 0 to collect a spiky object of that color. You increase the numbers by collecting dots. Your hebi must match the color of the dot in order to collect it. If you collect a spiky object without having any of that color or run into a wall, you will lose a heart. You can gain hearts by sacrificing two colors when you click on the '-' below a color. Use the left and right arrow keys to move. Change your color with the 1, 2 and 3 keys.