0.1.4 is the last release of Open Sonic. The next version will be Open Surge 0.2.0, a free game inspired in the classic Sonic gameplay featuring nothing but original user-made free (as in freedom) media: graphics, characters, sound effects, musics, plot, levels, etc. Open Surge also features an improved physics system. Try the bleeding edge version! Got interested? Please visit our wiki.


Open Sonic is an open-source game based on the "Sonic the Hedgehog" universe. It introduces a different style of gameplay called cooperative play, in which it's possible to control 3 characters simultaneously. Unlike most similar games, Open Sonic provides a greater level of interaction between the player and the levels. It's more than just a jump'n'run; the user must come up with some strategy in order to get through the levels.

Open Sonic is available for Windows and Linux. The latest release is 0.1.4 (September 19th, 2010). Main features:

Can't hear any sounds? Check out the solution.

Check out the source code!

Open Sonic Gameplay:

Video by 166291

A MOD made by one of our users:

Video by creatorsonic25

Mechanical Marathon MOD:

Video by SilverstepP

Shinobi Densetsu MOD:

Video by KZR

The video below is outdated, but it's got a great narrator:

Video by Rsonist88

Sonic and the Magical Stone MOD:

Video by wrath1138