The instructions are in the game. Our high score is 264, see if you can beat it. You can get the extension at: https://chrome.google.com/webstore/detail/infinitegators-fruit-ninj/mfemhlngibkbolhoajjpfmnkgjmoapjc
We got most of the code from @es563 and we modified it. Official website: https://sites.google.com/site/infinitegator/