u merge cubes and they become a level 1 menger sponge press 1 to form 20 of ur cubes into a level 1 sponge. press (level+1) to form 20 of ur level (level) sponges into a level (level+1) sponge
the problem is that u cant insert stuff in the variable dropdown its less automatic but whatever a text engine is a credits but idk who made it ;-;
