Please devs increase the fonts, or let us downgrade the screen resolution...
What a let down

Maybe you can give some further details ... as I could not reproduce what you are saying.

I have played "Möbius Front `83" several hours with a friend on an 28" screen under GNU/Linux and we are used to play
under 4k (3840x2160 pix) for a long time (I am using 4k since Q1/2015 - currently using a 31.5" screen - longing for 8k).
The font in "möbius Front '83" is not oversized - but it is not small either - let alone tiny.
Maybe there is some misconfiguration causing this on your system?

The graphical appearance (like the sound support) of "Möbius Front '83" is very good and fitting to a strategic game
like this - one should not use FullHD (FHD: 1920x1080) which is a really low resolution (just think of a normal paper
like DinA4 printed by a 300 dpi LASER printer of 1990 and yielding 4k res)!

It is ridiculous to see that after film companies recognized that 3d is for free using high resolution and no longer
use glasses with special 3d productions, that gaming is not catching up - still using low resolution and VR classes
which can never yield a natural feeling and yet speaking of immersion.
As 4k screens are quite cheap these days I really recommend to give a nice 28+" screen a try (especially when
working professionally with a workstation) - if the graphics card is not appropriate (e.g. AMD has optimized its cards
starting with RDNA1 beginning in July 2019), you can still use fullscreen with FHD with just larger pixel ... but
I would not recommend that, of cause.

So for all people already using 4k, this game really makes great use of the resolution ... like a current game should do!

Try on a 21.5", like my monitor...
Usually I don't have fonts problem with games.

OK, but this means that someone sold a screen with a resolution which no one can really see ...
The only company I know of doing such weird things is Apple with "Retina" displays - which may be a pun
on putting the display directly to the retina to use the resolution.

So when you have not experienced trouble before with some games those may have used FullHD content
being upscaled - as you lose a lot of information when viewing correct 4k material - as with 21.5" you have
no chance to get a 4k impression - not even really FullHD.
To be honest even my 31.5" screen could be larger without seeing a pixel matrix (at ~ 50 cm distance) but
getting more details from 4k.

As Astronomer I try to explain that there is a comfort zone were pixels are not resolvable but resolution is usable,
at a desktop distance of said 50 cm about 75 dpi/ppi, which is a larger TV screen.
If you want to see some calculations to understand the background:
* https://jmb-edu.de/en/kingdesktop.html#EyeResPow
On that page above this explanation you can see a table with resolutions and screen sizes - I think after that
the problem is quite clear.

Thus it is not the fault of the programmers - they really use 4k and have well sized fonts for 28+" screens
on which people can see (roughly) 4k information - so it's the fault of the screen vendors selling with
non-valid arguments as the native resolution can not be experienced.
22" yields for FullHD 102 dpi - so this is well in the comfort zone - so you are not using even 2k fully
if not using a magnifying glass or a distance not reasonable for desktop use, thus 4k can not be displayed correctly
due to the insane high pixel density which is just wasted.

I know I will waste some resolution when switching to 8k when it becomes available, but I hope for >> 40"
to have a nice workplace even when not using the entire resolution. But with large TVs getting cheap with
such resolutions, one can use it.
And even though I showed and explained these calculations to students several times I have not thought about
seeing such an advantage when going from 28" to 31.5" - the new screen had much better colors - but the size
made working a lot more comfortable so this was the biggest plus for me - really amazing!!!
So 22" is not a good size for FHD - let alone 4k. This resolution is just given - but no one will get a 4k impression
with such a tiny screen. From my point of view one should clearly state that the native resolution can not be seen
in typical distances ... so it is more for people wanting to say they have a 4k screen than about people who need 4k.

I don't use 4k, but my monitor uses FullHD, it is native 1920x1080 resolution,
in Windows I upscale dpi by 150% for fonts and all is good, thanks Microsoft.
But some few games have a bad UI, as it is done for the dev monitor, not for monitors of players.

I agree. The fonts are tiny.