I recently read a lot about different obscure computer systems of the 80s, including ones from East Germany, and noticed that some had this graphics controller (or a clone of it). I also recently read a bit about the CPC and how the Z80 was burdened with a relatively RAM heavy screen. Some of the systems that were equipped with the NEC controller could do high resolutions, but also in color. This was presumably mostly intended for business graphics, but does anyone have an idea to what extent games and a CPC-like system with a relatively weak cpu could possibly benefit from it?
The PC-98 line listed at the wiki page of course had a lot of games, but those systems had a 16bit 8086 from the beginning, and there weren't that many action games in the relevant time period to see what it might be capable of. I think the graphics system might also have been upgraded in later models already in the middle of the 80s? There's a high res Karateka for instance, but I've read it required the VM model which came out in 1985.
The Epson QX-10 used a 640x400 resolution and could do 8 colors as well, but it was only equiped with a Z80.
One of the computers that isn't listed there that I read bit about and where I checked out some docs to discover it had the 7220 was the Canon AS-100, which was another X86 IBM incompatible. It also had a 640x400 8 color display, but interestingly, the palette is supposed to feature 27 colors (the same ones as the CPC?). The CPU was a 8088.