XYFlyer

Think what he means by the equations not being right as they are not always in their most simple equation. If this is meant to be a learning game, equations should be simplified. eg. (y=x*2+2*4) could be more easily stated and understood by people learning as (y=2x+8) This example is one of your puzzles in the second world and makes the equation confusing. Confusing adds a degree of difficulty (not the kind you want), but kind of at the same time makes the equation incorrect (incomplete). Slopes are supposed to be in the y=mx+b form. If able to simplify the equation should be simplified to be correct.

This game is awesome, but... Not implementing a proper save when uploading a game to Kong is a terrible idea. Especially since variables can bug out (refreshing the puzzle while variable was still in equation was a bad, bad idea), making an equation unsolvable.

My game window has scrollbars. The game is larger than the game window. Itäs not much, and doesn't obscure the game much, but still annoying. It seems to be like 20px off on both axis. On latest stable chrome.

Game has made it so the browser "back" button won't leave the page. Hopefully this is isn't to increase game play stats...

Very basic, but I like the concept. I think a bit less repetition within each concept would be helpful. Would be a great tool to help students conceptualize graphs.