- NEW: added an intro level
- 2-1: adjusted music (also affects 2-2 and 2-4)
- 2-3: replaced a muncher with a wood block
- 2-A: adjusted pink blocks' positions
- 2-B: added some ceiling grass blocks
- 2-BONUS: added some bricks and ?-blocks, one of which contains a Poison Mushroom
- 2-FINAL: replaced offscreen exit with a pipe, and added two more seconds to the arena death countdown
- 3-2: adjusted a bush
- 3-3: added an anti-softlock pit and removed a 1-UP
- 3-FINAL: added a rainbow grass to the arena that gives a random power-up
- 5-2: recolored some warp pipes, and removed a lava block's hitbox
- 5-3: added a coin brick above the secret warp pipe
- 5-4: added a second power-up near the beginning
- NEW: added 5-GLADE
- 5-FINAL: removed a softlock, lowered the bubble, and made the bubble's Super Mushroom lazy
- STAR-5: reduced the speed of the lava waves (2.5 -> 2.3 and 3.5 -> 3.3), made the Super Mushroom near the beginning lazy, and increased the width of the rideable lava wave by one block
- SPECIAL-1: removed graphical effects of Koopa Shell collisions
- SPECIAL-3: adjusted a bush
- SPECIAL-6: made layout changes to the first section and to the secret room
- SPECIAL-7: reduced music volume
- SPECIAL-FINAL: added a wall to the left in the final arena, and increased the delay of Paratroopa generation in the final arena (3.5s -> 4s)