This classic platform Main Game, first released in 1988, sends Mario or Luigi across a nonlinear world map to navigate diverse platforming stages. The core loop involves exploring this map, tackling levels, and engaging in optional minigames. Distinctive features include significantly expanded movement options and new power-ups, such as flight capabilities, alongside more complex level designs and boss encounters, as the heroes seek to recover stolen magic wands from Bowser's seven children in the Mushroom World.
The story begins after a period of peace in the Mushroom Kingdom, which is suddenly disrupted. Bowser has dispatched his seven children to cause chaos across the neighboring Mushroom World. These antagonists have stolen the royal magic wands from each of the seven kingdoms, using their power to transform the respective rulers into animals. The objective for the heroes, Mario and Luigi, is to journey through this world, confront Bowser's offspring, recover the stolen wands, and restore the kings to their true forms.
The gameplay loop centers on exploration and precise platforming. A defining feature of this title is the introduction of a non-linear world map. This map serves as the central hub, allowing players to select which stage to tackle next, often providing multiple paths forward or opportunities to revisit areas. Success in levels rewards players with access to new regions and story progression.
This installment is renowned for expanding the hero's abilities significantly. New power-ups grant unique capabilities, such as the ability to fly or glide for extended periods, adding verticality and new strategic layers to level design. These mechanics demand a different approach to traditional running and jumping, encouraging experimentation with the expanded move set.
The combination of the expansive world map structure with the highly diverse level designs sets this title apart. Each of the seven worlds often features a distinct theme and unique environmental hazards. Furthermore, the game features more complex boss battles than previous iterations, requiring players to utilize their acquired items and skills effectively to proceed.
As a main game, this title has been made available across several platforms over the years, including the original Nintendo Entertainment System, the Wii, the Nintendo 3DS, and the Wii U. It has also seen one remake and one remaster, ensuring accessibility across different generations of hardware. Regarding additional content, there are no official DLCs or expansions associated with this core game experience.

A mod of Super Mario Bros. 3, sequel to Mario Adventure.

Super Ocho Bros. is a level hack for Super Mario Bros. 3 developed and released by Hansel2066 in November 2023.

A new level of hack for Super Mario Bros. 3. Like the original, there are up to 8 worlds.

This new romhack offers 8 new worlds and levels. Increase the difficulty as the game progresses.

Mario 3 Oasis is a medium-difficulty, non-kaizo hack, great for streaming and speedrunning.

Super Depressed Bro is, as the title suggests, a game about depression. There are 8 levels that can be played in any order, but none of them have victory conditions. In other words, there is no way to beat anything. Each level has an item that you can collect, but the items are best thought of as souvenirs.

Super Orb Bros. is a hack for Super Mario Bros. 3 featuring all new shell mechanics, a slow fall/regrab, on/off blocks, checkpoints, and a ton of other custom tech. The townsfolk speak of an Old Man Grimm who seems to have turned to the darker forces….should you accept their appeal for help?

Here is a hack which combines: Mario Bros., Super Mario Bros., Super Mario Bros. 2 JPN (The Lost Levels), Super Mario Bros. 2 USA, and Super Mario Bros. 3. Also added into this hack is the ability to use SRAM to save your games and to save your top score in Mario Bros.

This is a progressive Mini kaizo hack with the “mini” representing level length. It starts off soft with some basics and progressively get harder. 7 worlds 47 levels and quick retries. Good luck and have fun!

Super Calm Bros is a light kaizo hack that was inspired by Kamikaze Bros and Riff Bros. The difficulty is geared towards a wide audience and should appeal to both kaizo experts and players looking to level up their skills. The hack features Costumes, Gimmicks, P Speed and Platforming. There are 6 mandatory worlds with two bonus exits in the final world.

Super Sheffy Bros. 3 is a kaizo SMB3 romhack. This hack will challenge the player in doing various techniques like shell jumping, and various abuse with the power up items in Super Mario Bros. 3. This hack features a total of 16 levels with an optional path you can choose after beating the first fort. Good Luck!

Featuring a fresh set of vivid, newly themed worlds, The Rainbow Realms is a complete 8 world hack, with level design aimed to emulate the style and creativity of the original SMB3. The difficulty curve is aimed at the average to good player of SMB3, though there are some challenging levels and a couple of difficult puzzles in the last few worlds.

This is a full hack of Super Mario Bros 3 from NES. It features 8 new worlds, over 90 new levels, new graphics, new enemies, save game, difficult selection, item slot, etc.

With 8 newly themed worlds to explore, Super Mario Bros 3: A New Journey sticks with the original SMB3 format while using new graphics, custom over-world music and new levels to continue Mario and Luigi’s adventure beyond the original 8 worlds. Some tweaked sprites are also present. The difficulty is meant for semi-experienced players looking for new challenges.

Kamikaze Bros. 3 is a kaizo style SMB3 romhack. This hack was designed to be fun and very challenging. The player must perform tight jumps, advanced techniques and abuse the game’s mechanics in order to save the princess and emerge victorious.


Kaizo Mario Bros. 3 is a kaizo ROM hack of Super Mario Bros. 3 created by Hunter W.

Super Mario Bros. 3Mix is a large-scale hack that changes and adds lots of features to Super Mario Bros. 3, and pays homage to many past and (relative) FUTURE Mario titles, while attempting to remain faithful in spirit to the look and feel of Super Mario Bros. 3: - All new levels (and a few “remixed” Mario 3 levels somewhere in there) - Many new songs added from other Mario games (kept some SMB3 classics!) - Play as Mario, Luigi, or Toad (cosmetic only) in any configuration - New power-ups (Penguin replaces Frog, Carrot replaces Tanooki) - Star Coins (which are used to unlock portions of the game) - Ability to re-enter past worlds (with level completion intact) - Ability to re-enter past levels (to get all of your Star Coins) - Alternate exits in some levels - Ability to save progress - Many new enemies, typically some special ones for the world theme - All new bosses (many are “remixes” of bosses from other Mario games) - All kinds of gameplay changes to meet the theme of a level/world

A short romhack of SMB3 where you play as Peach

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