I mapped out the whole idea for level 4 rather quickly in MS Paint. I really liked this level because it gave me a chance to put in random minigames about anything I wanted (via the randomness portals). This includes the mario minigame and a minigame based around the real college I attend...

I found my testers got a tad annoyed by the jogs back and forth between the save spot and the portals in this level. I had the idea for players to be transported outside after eatting broken glass on my room's floor (for noooo reason), but never got around to putting it in.