History VideoGame / SuperMarioBros3Mix

The game was built using the Southbird 2011 Disassembly [[note]] a conversion of the ''Super Mario Bros. 3'' (specifically, the [=PRG1=] revision) code into 6502 assembly, the low-level programming language associated with the [[UsefulNotes/NintendoEntertainmentSystem NES's]] processor [[/note]], but despite the increased amount of options provided by low-level hacking, the main focus is adding to existing mechanics rather than overhauling the entire game as with hacks such as ''VideoGame/MarioAdventure'' and its sequel, ''Koopa Kingdom Escape'' (the latter being made because of and using the disassembly work).

* DoubleUnlock: [[spoiler:Triple, in this case. In order to play all the way through World 0 and face Count Bleck, you must:]]

** [[spoiler:Get all three Star Coins and the key in each of the four side areas of World 0.]]

* ActionBomb: Bob-Ombs reappear and can now blow up certain bricks (specifically, the ones fortress floors were made of in ''Super Mario Bros. 3''). This is usually a good thing, but a couple of levels (including one airship) have long stretches in which the floor is made entirely of these bricks, with Bob-Ombs constantly spawning eveywhere.

* EverythingsBetterWithPenguins: The Penguin Suit from the ''New Super Mario Bros.'' games replaces the Frog Suit, featuring the ability to freeze enemies and having the Frog Suit's improved movement in water (without the awkward land movement).

* EverythingsBetterWithDinosaurs: Rex and Reznor make an appearance from ''Super Mario World.''

* {{Nerf}}: The Tanooki Suit is identical to the Raccoon power-up in the original ''Super Mario Bros. 3'' in every way except visually. The Raccoon power-up itself was replaced with the Bunny power-up from ''Super Mario Land 2'', which lacks both the vertical flight and offensive capabilities of the Raccoon Suit. Worse still, the Tanooki suit is still just as rare as it was in ''[=SMB3=]':.

* {{Nerf}}: The Tanooki Suit is identical to the Raccoon power-up in the original ''Super Mario Bros. 3'' in every way except visually. The Raccoon power-up itself was replaced with the Bunny power-up from ''Super Mario Land 2'', which lacks both the vertical flight and offensive capabilities of the Raccoon Suit.

* DummiedOut: Inverted -- there was a second overworld sprite for fortresses left unused in ''Super Mario Bros. 3,'' but it's actually used here.

* GravityScrew: Happens all over the place in World 7. You have to deliberately cause it in places (by hitting a switch) in order to finish different levels. [[spoiler:Also happens in the first side area of World 0.]]

* CheckPointStarvation: Averted during the main playthrough. Each level has a checkpoint mushroom, which is enough for the average ''Mario'' level. Losing to a boss also puts you right before the boss after reentering the level, rather than at the previous checkpoint. Played straight in the "daredevil" comet challenges, which take the checkpoints away.

* BuildLikeAnEgyptian: There is a pyramid level in World 5.

* RecurringBoss: Every world has one in its fortresses, except for 2 and 8. Bowser Jr. appears as the final boss of 4, 6, and 7.

* SoundtrackDissonance: One level features upbeat music from ''Super Mario Land 2,'' with the primary enemies being a swarm of Albatosses that drop Bob-Ombs left and right.

* OneHitPointWonder: Going into [[spoiler:a level with a red comet will reduce your character to a small state and turn all the power-ups you'd normally find in that level into coins. You have to finish the level without being hit in order to pick up the coin for that challenge.]]

* RecurringBoss: Bowser in World 1, Petey Piranha in World 6, and Bowser Jr. throughout the game.