GWT is an flexible and object-oriented 2dgame engine. It uses Code::Blocks and is based on SFML2 to give the ability to port your code to multiple platforms.
With the integrated all-in-one tool for game resources it's possible to develop games in a short time.
And it's open source! (license coming soon)
Status: planning phase
Spring is a versatile 3D RTS game engine. Using extensively Lua for scripting game-specific code to make nearly every aspect of the engine customizable, from GUI, to unit AI, to pathfinding.
A 2D shoot them up game respecting space physics. Alpha.
Alpha version, for windows and linux. No sound yet. Has the ambition to make people live the feelings of actual space battles, with gravity, planets, asteroids.
Dev idle currently, project may stay as is.
This game is a mouse-driven dungeon crawler. The player moves the PC around, buys equipment, and attacks enemies using the mouse. More info on the wiki page. Use git to get the code.
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Terra Tenebrae is a free (as freedom) multi-Players RPG game engine based on client/server technology. The assets used are in licenses CC0, CC-by, CC-by-sa or GPL.
An alternative/custom Minecraft server, written in Java, compatible with the original protocol. OpenCraft is built upon Apache MINA, SLF4J, Jython and XStream. The aim is to have features not in the official server distribution, like antigrief/scripting.
The xVector Engine is a cross-platform 2D MMORPG engine written in Python. It will be a full-featured MMORPG engine allowing rapid game development without any programming knowledge, while still being easily extended with a Python scripting API.
A very high level 2d tile grid based game engine written in Python and PyGame. It is intended to make programming 2d tile grid based games much easier, especially for novices, while retaining the flexibility required by more experienced programmers.
A simple, lightweight, 2D game engine, made especially for beginner game developers. At a very early stage, but growing quickly. I'm moving, so no new releases for 1-2 weeks.
ika is a game engine designed to allow one to make a console style RPG with a minimum of code, while allowing one who is willing to code an impressive level of power over the look and feel of one's project, thanks to the embedded Python interpreter.
This is a 2D shooting action game for two players for GNU/Linux, Mac OS X, and Windows. Current release written in C++ using the SDL library with its extensions. Next release will be in Java.
OpenGDK is short for Open Game Development Kit. It's supposed to be a plug-in BASED (it's different from OGRE. OGRE is plug-in friendly), cross-platform, open source, general purpose (2D, 3D, client, server, editor), game development kit.
Libre Card Game is a free, open source and liberally licensed strategic/trading/collectable card game. Included in the project is code to generate SVG and PNG card images from an XML description. Also includes over 250 cards for the Libre card system
Othello is a space shooter action game similar to Metroid. It does not aim to be a copy however, and has a unique storyline. All the "pre" stuff is about complete, so development will focus on gameplay.
Pyzzle is a cross-platform game engine for creating large-scale, 2D Myst-like adventure games. The engine supports 2D panoramas, features an intuitive design mode, and allows users to download content from the internet. Pyzzle is written using Pygame.
Logik is a simple logical game. Player has guess a color code. The color code has 4 item and from 1 to 4 colors. Player has click mouse on 1 from 6 color circle. Evaluate: Small black circle is right place, color. White circle is bad place, right color.
It was my freshman C++ class project it's written in C++ it's a simple 2D car racing game now I put it on the web, maybe someone will find the sourcecode interesting and helpful.
A simple RPG game coded in Python 3 utilizing the TKinter GUI interface. Still in development, the current version is provided only in Python code for developers only (or anyone with a local Python installation who dares).