Atari Jaguar Pro Controller

Despite being the first ‘64-bit’ game system on the market (a disputed selling point) the Atari Jaguar was a failure through and through and part of the blame probably lies with its obnoxious controller design. The original featured a traditional directional pad with action buttons plus a 12-digit keypad that accounted for half the size of the beefy accessory.
Several games extensively used the keypad which complicated gameplay, even with swappable overlays that labelled each one’s custom function. A Pro version, pictured above, was introduced later with extra action and shoulder buttons to help future-proof the console, but it was for a future it would never see.