Open Source Side-Scrolling Games

Paintown is a 2d side scrolling beatem-up engine. Paintown supports game styles similar to the Sega Genesis game, Streets of Rage 2, as well as traditional 1 vs 1 fighting games through an implementation of MUGEN. Many aspects of Paintown are customizable, from the menu system to the levels and players that can be controlled. Paintown is highly portable. So far Paintown can run on Windows, OSX, Linux, BSD, Wii, PS3, Android and other systems.

JGame is a small multiplatform 2D game engine. It runs on the Java JRE 1.3+ platform, the J2ME (MIDP2.0/CLDC1.1) mobile platform, and the Android (2.1+) platform. It provides a very high-level framework for "classic" type arcade games.

OpenTitus is a rewrite of the game engine used in the old DOS-based games Titus the Fox and Moktar (the French version). This project parses the data directly from the original game data files. The project is based on SDL and programmed in C. A wiki is available at http://opentitus.wikia.com/wiki/OpenTitus_Wiki If you do not own the original game already, you can purchase it at https://www.gog.com/game/titus_the_fox_to_marrakech_and_back

A collection of developer tools for game-making on and for the Nintendo DS, including (but not limited to) content uploader, 2D game engine with sound, level and sprite editor.

Crafter 2D is a cross platform 2D game engine, with which you can create your own games! Using this engine, you can focus solely on your games assets and behaviour and don't have to worry about the platform. And it is free!

KOFFE is a 2D fighting game engine compatible with KOF'91. Written in Object Pascal, it's very configurable: it's possible to change all character definitions, backgrounds, sounds and graphics.

New Version Out - Keen Game Engine 4! Details coming soon....

This Library gives you support to deal with your gameloop,CoreObject,Ogg Managing, and more

A Simple Top Down Game Engine for Linux and Windows obs: in development pre-alpha stage, not fully playable

Euphoria is a 2 Game Engine and Development kit for aspiring game designers who are interested in getting their feet wet in the world of game design and programming. Some features of the engine are: - 2D levels and basic rasterized rendering - Simple animations and timer systems - A complete embedded Lua 5.1 scripting environment for level scripting - A drag and drop level designer - Support for all standard Windows Media Player compatible media types - Background Music - Sound Effects - Simple object collision detection - Pseudo 3D for making simulated 3D with 2D graphics - Scriptable Menus, buttons, etc - Custom Lua file manipulation libraries and script engine binding - Cut scene videos - Open Source What Euphoria is NOT: - A professional game design engine (maybe someday) - Bug free - Size Efficient (textures are stored as bitmaps - 3D - Covered Under Warranty - A Game, this is a Kit to BUILD a game

Soft body game engine, which can be configured to play lots of kinds of games