The game has been announced as "Unnamed Mario Fighting Game", the prototype name is "Modern Mario vs. Classic Mario".
- NES Mario, NES Mini Mario, SMB3 Mario, SMB3 Luigi, SMB2 Peach and SMB2 Toad originally were starter characters, and the modern characters originally were the unlockable characters.
- SNES Yoshi has been planned, but, him has been changed for NES Mini Mario.
- Wart, Birdo and False Bowser has been planned to be bosses.
- The Boomerang Suit from Super Mario 3D Land appear in the game files.
- SNES Yoshi (Based on Super Mario World 2: Yoshi's Island)
- GB Wario (Based on Super Mario Land 3: Wario Land)
- N64 Waluigi (Based on Mario Tennis)
- SMB1 Characters:
- SMB Peach
- SMB Toad
- SMB2 Characters:
- SMB2 Mario
- SMB2 Luigi
- SMB3 Characters
- SMB3 Peach
- SMB3 Toad
- The only stage who has been changed in the game is the SMB3 1-1, originally, the level would have enemies, but, there all cutted.
- A volcano like stage.
- A swamp stage.