platformerfan-gamesonic

Ultimate Flash Sonic

A beloved 2004 Sonic fangame that recreates Sonic Advance-style movement in Flash with multiple playable characters and password saves.

By Dennis-Gid Year 2004
Ultimate Flash Sonic cover art

Click the game area to focus keyboard controls

Press play to load the game.

Controls

Arrow keys to move, Spacebar to jump, fly, or spin dash depending on the character.

Instructions

Choose a character, clear both zones, and use the password system to preserve progress and unlockables.

Credits

Title
Ultimate Flash Sonic
Author
Dennis-Gid
Year
2004
Source
https://www.newgrounds.com/portal/view/151706
Runtime
Ruffle (Flash emulator)

This game is preserved for archival and educational purposes. Original rights belong to the respective creator(s).

Known Issues

  • This is a fan game based on Sonic properties, so rights review is especially important before publication.

Troubleshooting

  • Click the game area to activate keyboard controls.
  • If audio doesn't play, try clicking inside the game first.
  • Use the Reload button above the player to restart.
  • Try Chrome or Firefox for best compatibility.
  • Disable browser extensions that may interfere with WebAssembly.

About This Game

Ultimate Flash Sonic was uploaded to Newgrounds by Dennis-Gid on February 21, 2004 and became one of the most widely played Sonic fangames of the Flash era.