I grew up with LCD games, mostly the cheap ones that Radio Shack sold, or I got second hand through yardsales. I didn't have a Game Boy till the Pocket came out in the 90s so gaming on the go for me was LCD games or counting cows. Lol
As you know, they all were basically Atari games with "less". The artwork FAR outshined anything on those screens. Lol Though I have fond memories of the Mega Man 2 and Castlevania II Simons Quest ones by Tiger Electronics.
In the early days of portable electronic games i got a couple of LED based games. They were both from Radio Shack. One was a pac man clone and the other was a space invaders clone. I loved the bright colors of those and played them a lot. The only LCD game i remember playing a lot was a bowling game. I was never a big fan of black and white, even the Game Boy (though i loved the Advance). I had a Game Gear and wanted a Lynx. I only wish their game libraries had been like the Game Boy.
I like playing the "what if" game, especially with gaming since Nintendo's contracts prior to the 16-Bit era were so restrictive and controlling. I always wonder what Contra would have looked like on the Atari 7800 or SMS or Game Gear. So many titles that seem like they would have massively benefitted by being on less "kid focused" consoles we will never know how they would have done.
Edit to add -
Atari simply could not stop shooting themselves in the foot. From promoting their Batman game at select movie theaters - I believe it was over a minute or so of gameplay. No filters. No graphics, just raw gameplay footage on a giant movie screen. Of a Lynx game. I can only imagine how bad that looked but Atari paid good money to promote it like that. No actors from the movie even just B-roll, nothing. Just the game.
I honestly think Atari never should have bothered with the CD-ROM attachment for the Jaguar either. As far as I know it only offered audio and memory enhancements - no hardware chips or anything like the Sega CD offered.
Sega, if they would have focused on gaming instead of trying to make the Game Gear an all around portable entertainment device might have done better themselves. I wanted a GG but it was more for the TV tuner add-on than any particular game. The price of the add-on was prohibitive, as was the cost of the GG itself when compared to the Game Boy.
It didn't help that they purposefully shaped the Nomad to not accept the 32X add-on. While it would have been nearly impossible to play on the go, the Nomad was a perfectly fine Genesis console replacement if you only played cart games.
Outside the prohibitive 3rd party contracts, I believe that is why Nintendo has beaten the competition, especially in the hand held market (consoles they have only really had two major clear cut winning platforms - NES and Wii). They focus on games.
Sony came out with the PSP and immediately diluted the market with movies specifically for the PSP - why not just go iTunes with that stuff - digital only and hold off wasting effort and money to make "exclusive" versions for the PSP? It made no sense to me - especially with the battle over home media still fresh, if not still being faught at that time between HD-DVD and Bluray.