The Quantum Game Library (QGL) for PHP aims to centralise common game elements in a component library. Includes Map Computations for Grid/Hex maps, pluggable map generator, Artificial Intelligence algorithms, plugin system and more. Or it will :).
InteliPet is an Intelligent Virtual Pet Content Management System, including Shops, User-Shops, Pet Skills, and more. Requires only PHP & MySQL at this time. Currently we are building the CMS.