There are some cheats on the website inspired on some games you can try to find them or if you don't want to you can just click on the button below.
Click Me
If you write the well known konamicode (up, up, down, down, left, right, left, right, b, a) or "godmode" on the website something will happen. Another thing you can try is to click on a pixel located 300px from top and 400px from left (3rd line, 4th row)