Jeremy and Sean from Tested have partnered with Other Ocean to create an awesome looking Tank based bot that can be controlled remotely through the online service Mixer and players can control the bots to play a game of Soccer (or rather Football if not in the US). The bot is made up of some off the shelf items as well as 3-D printed parts with a Particle Photon and PhoBot Robotics shield to handle the drive mechanism along with Pozyx 2-D and 3-D position tracking system which is also Arduino based. Each Tank has a Pozyz unit on board and there are sensors in the arena so the bot can be tracked by it's X, Y and Zed positions. The camera is just a web based camera to give a player a first bot perspective.
Mixer link
Pozyx
Particle Photon:
PhoBot
PhoBot - Robot Controller Board for Photon
Tested - Project TankBall