The Telstar Arcade is one of the most unique game systems ever released. After years of Pongs, Coleco released this as a cartridge-driven system. It offered various methods of control, surprisingly not being added as peripherals, but being built into the system itself. That resulted in a strange yet lovely triangular shape with controllers, gun and steering wheel attached. Few games were sold separately on (again triangular) cartridge, making the full set a sought after collectible as some of the games are really rare.