Radek Koncewicz wrote this in 2011 as the second part of his Super Mario Bros. 3 study for Gamasutra. Part 1 covered tutorials; this one is an illustrated tour of 30 specific levels where the layout, not the art or the story, does the design work.

The moments he pulls out:

  • Hazards placed at successively lower heights instead of in a row, so running under them stays uncertain until the last one.
  • Bricks deliberately converted to Used Blocks so a kicked shell is penned in and clears a path to the exit — designed chain reactions, not random ones.
  • An Angry Sun that does not scroll with the background, letting an otherwise flat level carry the whole stage on dodging alone.
  • An end-level pipe placed two screens from the right edge, breaking the pattern the game spent three worlds enforcing.
  • Giant Land, which only lands because the player had three worlds to internalise normal scale first.
  • Wooden Blocks turned from a reward into an obstacle that stops Mario’s jump and skids him toward a pit.
  • Kuribo’s Shoe — found in exactly one stage — which lets Mario walk across Munchers and stomp Piranha Plants.
  • World 6-5, where the only solution is a chain: flight power-up, clear runway, stomp a Koopa without killing it, carry the shell, throw it into plants that cannot be stomped.
  • The World 8 military waves: stationary tanks that read as mobile because of the auto-scroll, then a final wave that speeds up to jolt the pacing.
  • Bowser, who smashes bricks by stomping down — the exact inverse of how Mario breaks them for the entire game.

Koncewicz’s conclusion is that SMB 3’s distinctiveness comes from conditioning the player and then pulling the rug out. It works because the twists are optional and cost time rather than lives — the invisible blocks in World 7-5 slow you down, then become bridges on the way back.

The bigger point under the list is variety treated as a production budget. Even inside a themed world, consecutive stages switch tilesets and play modes — auto-scrollers, fortresses, water stages, arenas, labyrinths, shops, airships — because the goal was a game that never feels repetitive.