Tons of old LCD games have been ported to run in Flash player on Handheld History:https://archive.org/details/handheldhistory?sort=-downloads
Press TAB to change input as it defaults an action (usually attack) to the Alt key for some reason, was fun playing Gauntlet. Are these running in MAME or something? Looks like it from the menu, would be cool to get these on one of the Ingenic handhelds.
GPD Win, GPD XD 64gb, PlayGo, RS-90, 3DS XL, DSi XL, GBA SP, GBBC Clone, Gameboy Pocket c/w screen mod, PSP Go
Medion Erazer, Toshiba Z20t, Dell Mini 9, Psion 5MX
Tons of other old laptops and tablets.....