Sonic Uno

Sonic Uno is a Sonic ROM Hack, which you can play online on our website. This project is based on the classic Sonic the Hedgehog (1991) released for the Sega Genesis / Mega Drive. The hack was developed by a creator known as Super in the Sonic Retro community. You control Sonic the Hedgehog and travel through platform stages while fighting the machines built by Dr. Robotnik (Eggman).

We have added different retro Sonic games to our website. Sonic Uno stands out because it redesigns the original Sonic 1 levels with a more demanding stage layout. If you enjoy classic Sega Genesis platform games, you may want to explore this hack. Let's play the game on our Y9FreeGames website.

How to Play

• Arrow Keys – Move Sonic
• Z – Jump
• X – Roll / action
• Enter – Start or pause the game