Classic and fantastic demon. It mirrors its predecessor Zaphkiel a lot in the gameplay styles, but diverges immensely when you're not just concerned about the specific gamemodes being used and actually play the level. Catalyze is absolutely balanced around its waves, but as time has gone on, that decision has aged pretty well with wave being the mode a lot of people in general are great at compared to the others. The gameplay has pretty fantastic song representation and has a pretty good song in general. Deco has also aged pretty well and sets the level apart from others.