EZDM (ezdungeonmaster) is a simple set of tools for dungeon managers, targeting AD&D 2nd edition rules. It's not an RPG game, but some helper tools for people DM-ing real games, and is designed not to get in the way of roleplay and storytelling, but simply help do the math during encounters and leveling. Dice rolling can be done by the computer, or the tools can be set for manual dice, in which case you simply enter the results of the roll. All game data, charts, and character sheets are stored in JSON format. The EZDM kit defaults to using a simple dialog-based GUI which requires easygui, but a console interface is also available.
Me and My Shadow is a puzzle/platform game in which you try to reach the exit by solving puzzles. Spikes, moving blocks, fragile blocks, and much more stand between you and the exit. Record your moves and let your shadow mimic them to reach blocks you couldn't reach alone. Play through over 40 levels and use the built-in level editor to make your own.
RoseThorn is a cross-platform library for 2D and 3D games running on GNU/Linux (and possibly other Unix-like OSes) and Windows. Features include: hardware accelerated 2D and 3D rendering; Ogg and WAV Sound support with OpenAL; Lua scripting; BMP, JPEG, and PNG image loading and saving (from screenshots); easily created and modified user interfaces with XML and CSS, combined with Lua event handling; separate 2D and 3D libraries; support for multiple fonts in both TTF and bitmap formats; support for OBJ, 3DS, MD5, and RTM model formats; skeletal animation (a work in progress); support for UDP and TCP networking; thread and mutex support; a Simple Shader API; 2D animated sprites; and some basic cryptography support. There is simple event management, with key/mouse bindings easily customized from the in-game console, config file, command line, or GUI.
FMG is a futuristic war game based on full metal planet (an 'old' board game) and playable in a Web browser. Land your spaceship on Full Metal Planet, pick up ore, destroy or capture the enemy expensive hardware, and if you can, capture their own freighter with a hold full to bursting. Each game is independent. Although it is playable in English, not everything in the guide is translated yet.
Quabro is an arcade game in which the goal is to destroy colored blocks with a ball using four paddles on each side of the screen to steer the ball and keep it on the field. It is inspired by Breakout and Arkanoid, as well as several of clones created later. It is written in Python using the Pygame library.
Gibbon is a graphical client for playing backgammon online on the First Internet Backgammon Server or servers that use the FIBS protocol. It is platform-independent, using GTK+ for its user interface. It also contains a converter for different match formats. Currently supported are the Smart Game Format, JellyFish, and JavaFIBS.
Anywhere Board Games (ABG) allows users to play board and card games on the Web in real time on multiple machines (PC, Linux, iPhone, iPad, and Android). ABG runs as a Google+ Hangout App or as a standalone PHP app. Unlike other gaming environments, this one has a peculiar vision: projecting the main board on our table and using laptops or tablets to control players' hands (with other friends joining in remotely). It supports flipping, stacking, rotating, rolling, and shuffling of pieces, so most board and card games are playable.