Angel is a 2D game prototyping engine based on OpenGL and C++. It was originally made by a group of employees at Electronic Arts Los Angeles for use in a GameJam they were planning for April of 2008. Angel provides many useful functions for prototyping gameplay, including simple physics, particles, text rendering, sound, input mappings, config files, pathfinding, and Python scripting.
Arx Libertatis is a cross-platform, open source port of Arx Fatalis, a 2002 first-person role-playing game developed by Arkane Studios. Arx Fatalis features crafting, melee and ranged combat, and a unique casting system where the player draws runes in real time to effect the desired spell. The Arx Libertatis source code is based on the publicly released Arx Fatalis sources. This does however not include the game data, so you need to obtain a copy of the original Arx Fatalis or its demo.
Blood Makes the Grass Grow Green (BMTG3) is a multi-player, side-scrolling, 1-dimensional strategy game that pits two people against each other in a duel over a stretch of land. Each player is positioned in a bunker at opposite ends of the map and tasked with deploying the right personnel and vehicles to capture FOBs (forward operating bases) and overrun your enemy's bunker. Currently there are 5 different units available. Timing, unit selection, and basic strategy are all necessary for success.
CorsixTH is a clone of Theme Hospital. As computers evolve, we risk losing some classic games. Bullfrog's Theme Hospital, published in 1997, is a classic simulation game, but getting it to run natively on modern operating systems is getting progressively harder. CorsixTH aims to reimplement the game engine of Theme Hospital, and to be able to load the original game data files. This means that you will need a purchased copy of Theme Hospital, or a copy of the demo, in order to use CorsixTH. After most of the original engine has been reimplemented, the project will serve as a base from which extensions to the original game can be made.
The Ecere SDK is a cross-platform toolkit for building software applications. It currently runs on Windows, Linux, Mac OS X (through X11), FreeBSD, and the Android OS. It should run on other Unix platforms with minor testing/tweaking. With the Ecere SDK, you can develop applications once and deploy them on all supported platforms alongside a lightweight runtime environment. It introduces eC, an object oriented language derived from and fully compatible with C, compromising neither runtime performance nor ease of use. A built-in 3D engine supporting both Direct3D and OpenGL is fully integrated.
Equalizer is middleware for creating and deploying parallel OpenGL-based applications. It enables applications to benefit from multiple graphics cards, processors, and computers to scale rendering performance, visual quality, and display size. An Equalizer-based application runs unmodified on any visualization system, from a simple workstation to large scale graphics clusters, multi-GPU workstations, and Virtual Reality installations.
Frogatto is an old-school 2D platformer game starring a certain quixotic frog. It has gorgeous, high-end pixel art, pumping arcade tunes, and all the gameplay nuance of a classic console title. Run and jump over pits and enemies. Grab enemies with your tongue, swallow them, and then spit them out at other enemies as projectiles! Fight dangerous bosses, and solve vexing puzzles. Collect coins and use them to buy upgrades and new abilities in the store. Talk to characters in game, and work to unravel Big Bad Milgram's plot against the townsfolk! At over 30 levels set in 4 different environments, Frogatto is not a flash in the pan, and has the play-time you'd expect from a real video game.