You have thirty seconds to collect as many stars as possible use keyboard arrows to go left right up and down the big stars are worth 2 points and the smaller stars are worth 1 point, if you touch the edes you just bounce back and you stay where you are but the stars you have collected go back to their original places.
Thanks to @LHinves24 for the original project Maze game which was a lot harder than this but you could remix this and make it so you keep yur stars when you bounce off the walls.