Open Sonic

Open Sonic is an open source game based in Sonic the Hedgehog universe -- one of the most requested games from the 90's to today.

This version of the Sega classic includes a unique coop game mode in which you'll be able to control three different characters at the same time.

Open Sonic caters an interactive integration mode between the player and the levels because it's not just any old platformer. You'll have to determine specific strategies for overcoming each upcoming level.

Also, the game is still in the development phase, doesn't need any installation, and is available in four languages (English, Portuguese, Spanish, and French).

The game also lets you create new levels to your liking using the level editor, although it's pretty basic.