(you aren't limited to only luigi, i just play as him often during testing so)
The creator of such middling levels as ASMBXT's Parco di Potassio and MaGLX's Too Many Trains in This Motherfucking Tunnel will soon be bringing you a whole package (likely in .RAR format) of middling levels under a middling name! For example, check out these two levels that look boring because they're from the first world! Get excited! Or not! Not everyone's overly enthusiastic about things, and that's A-okay!
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Plan is to make eight worlds with four levels plus a castle in each, along with a Star World with who-knows-how-many levels, which adds up to 41 levels at bare minimum if you can count. And there will be more than that for sure.
...Here's hoping!