The following came to mind as I was listening to the Lord of the Rings score.
Project Magic Legolas, is an AI controlled explosive arrow, capable of being used in combat to eliminate large army squads, or even small battallions. Its intented use, is to avoid all contact and eliminate the desired target.
The player, is going to provide the valuable data for the supervised ML algorithm the arrow will be using. To do that, he/she will manually control the arrow through test courses and will try to eliminate the targets. The algorithm, will try to analyze the patters behind every obstacle avoidance and improve them even more.