Haha, fair enough! ^^
The artist was going for a vision where the worlds sort of "collide" and as a result enemies from both the home world (like the mousechilla) and the pool world (like the evil pool noodle ofc) are mixed together in the same style while the background remains of the natural pool world style. We were originally planning on a cutscene to show this but didn't have time to implement it, so it's definitely left very unclear, and I take fault for that because I thought we'd have time but I didn't anticipate all the last-minute bugs. >.>