GGTL 2.1.x GGTL is a library designed to make it easier to program games in C. It provides an AI that is able to play most 2 player strategic games. Nim, Tic-Tac-Toe, Reversi (aka Othello), Connect-4 and Chess are all examples of games that can all be implemented using GGTL. The provided Reversi and Nim extensions implement all the game-specific callback functions GGTL's AI needs. Using one of these extensions means you can have a game with a capable AI up and running in next to no time. Doing so incurs no penalty in flexibility, however--you can override any provided callback function with your own. The core library documentation can be found in the ggtl(3) manpage. The reversi(3) and nim(3) manpages should be consulted for its extensions. The GGTL homepage is at http://brautaset.org/software/ggtl/