I think one of the issues with old gamea is that the analogue side no longer is available to today's audiences.
Early titles look so crude nowadays because they were made with old video systems in mind.
An Atari 2600 game looks best on an US American TV set from the 1970s, via RF connection (PAL/SECAM versions are inferior here).
For a faithful emulation, the old NTSC standard has to be emulated, but also loss/blurring by RF connection and the CRT tube.
The tube emulation has to have phosphor glow and convergence errors taken into account, but also the type of CRT tube (slot, dot, trinitron, etc) and the bad resolution (big dot pitch. 0.6mm and up).
Unfortunately, many of the popular emulation projects had started in the 90s,
when physical CRT VGA monitors still were in wide use and thus CRT emulation was more of an afterthought.
The various Japanese emulators are a good example, here, I think.
They do emulate no CRT characteristica, except scan lines.
Or, let's take Apple II color graphics or CGA w/ artifact colours.
The real thing connected to real old TVs or video monitors looks so much more vibrant than emulation does.
So it's no wonder that people think old games look bad - if they never have experienced things in its authentic condition.
I thought same about DOS games in 320x200 at the turn of the century, by the way:
It wasn't until the 2000s when I noticed how ugly they are, because that's when I got modern VGA CRT monitors.
Before this, in the 1990s, I still had my 286 PC with an 14" IBM PS/2 monitors that had a 0.41mm dot pitch and a somewhat blurry image.
This blur helped to make even Windows 3.1 look smooth, despite those dithered 16 colour icons and the blocky text fonts.
It wasn't until DOSBox and the filtered Direct Draw output (Win32 build) that I got my old Windows 3.1 experience back.
It wasn't perfect, by any means, but much better.
Anyway, I'm optimistic that CRT emulation will be near perfect one day.
(SNES9x and Blarg's NTSC filter are quite good already.)
Because, it's not the LC display itself that prevents this from happening.:
Otherwise, YouTube videos with recordings of real CRTs watched on smartphones/tablets/flat-screens wouldn't look realistic, either.
Edited.
PS: CRT emulation could also be useful to our fellow users here on Vogons one day, I think.
It could improve experience of users of TFT monitors or modern day VGA CRT monitors.
Maybe there's a converter box one day, which takes an VGA signal, adds blur or CRT emulation to it and outputs it to VGA again.
A Raspberry Pi 5 could do that, maybe. RGB and RGBHV aren't that different.
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