Can I use mouse movement as an input? For example, if you move the mouse up, the player moves up.

Im guessing not from the "NO MOUSE MOVEMENT!!!!" rule

As apple_ej said, we usually don't use mouse movement in this jam.

Full mouse movement would be the equivalent of many buttons.

If you only use "mouse up" and no down, left or right mouse movement, it could be ok. But not very practical (we would have to regularly lift the mouse, I'm not a big fan of it personnally)

oops. Did not see that