I don't know if the requests are put here, but it would be nice to add this system to the list. The games are emulated with MAME, so there is an emulator and it works, it does not have many games, but it is something curious and functional.
Gamate
Release Date: 1990
Developer: Bit Corporation
CPU:
UMC UA6588F (earlier revision)
NCR 81489 (later revision)
both 6502 based
Memory : 16KB RAM
Graphics: LCD in 4 greyscale
Sound: Mono internal speaker
Display: 160x152
Overview:
The Gamate, known as 超級小子 in Taiwan and 超级神童 in China, is a handheld game console manufactured by Bit Corporation in the early 1990s, and released in Australia, some parts of Europe (partly the UK, Italy, Germany, Switzerland, Sweden and Finland) and Asia (Taiwan and Chna), Argentina, the United States, and possibly other regions including South Africa.
It never sold in numbers comparable to the Game Boy or even the Watara Supervision, and as a result information on the console and its games remains scarce. The only emulator that supports it is MESS. Over 70 games, not all dumped, are known to have been produced for the system.
Source: https://en.wikipedia.org/wiki/Gamate