You can't join the 16 bit revolution without some equipment. Alas, membership seemed to be pretty exclusive, because I only ever saw a TG16 running in Toys R Expensive, and my own house.

Taking what they had started with in their Joycard controllers for the Nintendo Famicom, the TurboPad includes integral turbo fire switches, with two individually selectable levels of rapid fire. This proved to be rather convenient for the shooters released on the TurboGrafx-16. All edges of the controller have some degree of curved beveling to improve the ergonomics far in advance of the Sega Master System and Nintendo Entertainment System's controllers, each sporting rather angular shapes.

Released with the TurboGrafx-16 in 1989 to compensate for the system's sole controller port, the TurboTap allows up to five players in games which support as many. 19 games support at least two player mode with it, justifying its purchase so long as you have friends or siblings to play with. The cord is 12 inches long, which doesn't provide much reach for the console.