TA Spring, the open source game inspired by Total Annihilation had multiple AI:s, some of them open source. People just developed them as libraries and talked a

TA Spring, the open source game inspired by Total Annihilation had multiple AI:s, some of them open source. People just developed them as libraries and talked about them on the forum. You could just download and plug them in to the game. You could even pit them against each other.