The industrial world finishes with Gregor's really industrial-looking level, and we also get to see what the dark depths of an industrial world would look like. Plus we do all the switch palaces, which had nice gimmicks that could give a bonus if done correctly (much like switch palaces from the original game)
Romhack - S.N.N. et al.
Gameplay - SMCslevelengine
Original SMW - Nintendo
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