It use SDL in Linux and HGE in Windows for graphics platform, and use Lua for action script.it's easy to make a simple game and externable for more functions.
Tick5 is a board game known as gomoku, omok, piskvorky or wuziqi. Tick5 has a built-in AI and also allows users to build their own AI with script language Lua. Tick5 runs cross-platform and has both GUI and textual version.