Well, from my standpoint systems like the Lynx, Game Gear, and some others aren't really underrated. The Game Gear put up a solid fight for many years against the Game Boy, and it's gotten a lot of well deserved credit. Losing a generational "battle" doesn't make a system underrated. What does make one underrated IMO is being a critical flop in its day, then coming around later on to compete with more powerful hardware.   That said, two of 'em are on my list: The Atari 7800 for its stellar ar