Sega Game Gear (1989)
As Sega’s entry into the handheld console competition of the late ‘80s, the Game Gear was meant to go up against Nintendo’s Game Boy and the Atari Lynx. While it did have a pretty powerful processor and access to the Master System’s library (via an adapter), its battery life basically blew, and Sega didn’t bother to put much out in terms of unique titles. It was discontinued in 1997, and probably for good reason.