2D

Land of fire is a MMORPG project.

Thrive is a free, open-source game about the evolution of life.

OpenGOO is a free and opensource clone of World of Goo game, written in Qt 5 and Box2D as a 2D physics engine.

Probably the best game involving goats and shotguns!

The SGE Game Engine ("SGE", pronounced like "Sage") is a general-purpose 2-D game engine.

ReTux is an action platformer loosely inspired by the Mario games, utilizing the art assets from the SuperTux project.

In this game you must jump on the opponent with your rabbit to win.

This game is a independent MMORPG, Lan game and a single player game.

Heroine Dusk™ is a basic dungeon crawl made using an old aesthetic.

Don Ceferino Hazaña is a Pang! like game.

Ren'Py is a visual novel engine – used by hundreds of creators from around the world – that helps you use words, images, and sounds...

Nikki and the Robots is a 2-dimensional platform game written in Haskell.