chocolate-hexen

Hexen engine closely-compatible with Vanilla Hexen

Chocolate Doom aims to accurately reproduce the original DOS version of Doom and other games based on the Doom engine in a form that can be run on modern computers. Unlike most modern Doom engines, Chocolate Doom is not derived from the Boom source port and does not inherit its features (or bugs).

exult-studio

tools for editing and viewing exult games

Includes:

php-google-api-php-client

Google APIs client library for PHP

The Google API client library allows one to work with Google APIs such as Analytics, Adsense, Google+, Calendar, Drive or Games. It includes support for HTTP streams, which makes it simple to use the library from an App Engine application just by tweaking the configuration file.

qtads

Qt HTML interpreter for TADS

This package provides an interpreter for TADS game files, using a Qt interface. It can run either TADS 2 games (which have an extension of .gam) or TADS 3 games (which have an extension of .t3). See http://www.ifarchive.org/indexes/if-archiveXgamesXtads.html for a large collection of available TADS games.
BASIC interpreter for game development - runtime interpreter

sdlbrt

BASIC interpreter for game development - runtime interpreter

sdlBasic is a small, efficient and multiplatform BASIC interpreter for creating games using the power of SDL library. It was inspired by the old and glorious AMOS.
Break Out Of Hareka's Underground -- a roguelike game

boohu

Break Out Of Hareka's Underground -- a roguelike game

Break Out Of Hareka's Underground (Boohu) is a roguelike game mainly inspired from DCSS and its tavern, with some ideas from Brogue, but aiming for very short games, almost no character building, and a simplified inventory.