

Super Mario Bros: Definitive
About the Game
Super Mario Bros: Definitive is a ROM hack of the original Super Mario Bros. that combines content from Super Mario Bros. and Super Mario Bros.: The Lost Levels into one large adventure. This project was created by members of the ROM hacking community who wanted to create a more complete version of the classic NES platform game while keeping the original gameplay style intact.
You can play through the familiar Mushroom Kingdom stages and continue into the tougher Lost Levels content without switching to another game. Several improvements, fixes, and extra features are also included throughout the adventure.
๐ A Larger Mario Adventure
The biggest difference in Super Mario Bros: Definitive is the amount of content available.
You start with the classic stages from Super Mario Bros. and then continue into the worlds from Super Mario Bros.: The Lost Levels. This creates a much longer journey than the original NES release.
The game keeps the classic objective:
- Rescue Princess Peach
- Travel through multiple worlds
- Defeat Bowser and his forces
- Discover hidden shortcuts and secrets
โญ What Makes This Version Special?
This ROM hack stays close to the original game while including several improvements.
Some notable features include:
- Complete Super Mario Bros. campaign
- Full Lost Levels campaign
- New World 9 content
- Save and continue options
- Improved Luigi physics
- Various bug fixes
- Updated graphics in selected areas
- Better life management system
Many fans consider it one of the most complete ways to experience the original NES Mario adventure.
๐ฎ Classic Gameplay That Still Works
If you have played the original Super Mario Bros., the controls and mechanics will feel familiar.
You can:
- Jump across gaps
- Defeat enemies by stomping on them
- Collect Fire Flowers and Super Mushrooms
- Enter warp zones
- Explore underground and castle stages
- Search for hidden 1-Up Mushrooms
The game keeps the precise platforming style that made the original famous.
๐ข Luigi Has His Own Identity
Luigi is not simply a different color character in this hack.
His movement uses physics inspired by Super Mario All-Stars. You will notice differences in movement and handling compared to Mario.
This gives you another way to experience the game from start to finish.
๐ฐ New Content Beyond The Original Game
Super Mario Bros: Definitive includes a custom World 9.
This world contains content that does not appear in the original Super Mario Bros. campaign. Some areas take inspiration from unused concepts, unusual level designs, and special stages from other Mario releases.
For long-time Mario fans, this section offers something new to explore.
๐ฅ Lost Levels Features Appear Throughout The Game
Several mechanics from The Lost Levels are included within the combined adventure.
You may encounter:
- Poison Mushrooms
- Wind effects
- Red Piranha Plants
- Upside-down pipes
- Alternate bonus mechanics
These elements increase the overall difficulty compared to the original Super Mario Bros.
๐น๏ธ Game Controls
EmulatorJS Keyboard Controls
| Action | Control |
|---|---|
| Move Left | Left Arrow |
| Move Right | Right Arrow |
| Up | Up Arrow |
| Down | Down Arrow |
| Jump | X |
| Run / Fireball | Z |
| Start | Enter |
| Select | Right Shift |
Mobile Controls
- Use the on-screen D-Pad to move.
- Tap the A button to jump.
- Tap the B button to run and shoot fireballs.
- Use Start and Select buttons on the screen menu.






































