May be a bit glitchy. Sorry. If you find your self stuck on the "C'mon theres lava down here too" level, than just press the right arrow key and hold down Press "S" to select a level. As of now, it will only go to level 5.
@stampylongdog is who I got the scripts for the cube's movements from. Thanks to stampylongdog @HOWING_test also recieves credit. They helped me fix a problem in the coding, involving the bounce code. Thanks.