Square bird is a fun online game about chickens and laying eggs. In order to play, you have to click the screen to lay eggs under your character. The eggs will help boost you, lifting you over gaps and to the tops of platforms.
Make sure you lay enough eggs to make it to the top of each platform, otherwise your character will hit into the side of it, ending the round. You will have to start over and try again.
Each round, there are things such as power-ups, where your character will shoot white balls, making the platforms disappear, so that you don't have to lay any eggs, and coins, that will help you buy skins and power-ups for your character. Good luck!