Use left and right arrows to move. Use the up arrow to jump or climb through a passage between walls. Down arrow to sink. Spacebar: Change environment. There is a bug, if you press the up arrow repeatedly you will fly, but there is nothing I know of to mix it, as the character is pen. I really don't know why, but this reminds me of a mobile colloidal jelly...
Thanks to TR00M00 for the original project, I thought it would be cool to add platforming scripts.