Canonical cartridge
Full hardware-native layout for flashcarts and the edition’s custom MAME or GnGeo metadata.
SMBNeo
Super Mario Bros. Neo
Browser player
Play the Neo Geo port online
Play the Home edition from your supported .nes image, or
the VS Arcade Edition from your canonical suprmrio.zip
set. Your file is processed entirely inside this browser and is never
uploaded.
Your generated cartridges
Download the format you need
NeoSD image
Single-file cartridge for TerraOnion NeoSD and NeoSD Pro flashcarts, generated directly from the native layout.
Fixed-database compatibility
Optional donor-compatible package for FBNeo, EmulatorJS, and other frontends that cannot load custom metadata.
Home edition
Choose your supported Super Mario Bros. (World) game image.
Waiting for a local .nes file or ZIP.
When the player appears, select Play SMBNeo, then press 1 at the title screen. Click the game if keyboard focus moves away.
Keyboard
Controls
- Move
- ← ↑ ↓ →
- Jump / swim
- AS
- Run / fire / grab / throw
- QW
- Start
- 1
- Select
- 2
On a Neo Geo controller, A and B both jump; C and D both run, fire, grab, or throw. Gamepads and touch controls are also supported and can be remapped from the player toolbar.
Bring your own game
This site contains both open-source port runtimes and an open Neo Geo BIOS, but no original game ROM or generated cartridge. Home and VS graphics are created in memory from the file you select. Nothing is uploaded; generated data disappears when the page is closed unless you explicitly download it. NeoSD images do not contain a Neo Geo BIOS.