Best rez to play?

[M€M3!N$]

4k made them look like 8 bit blobs running around

[Julius Borisov]

I prefer to play at 1680*1050

[M€M3!N$]

ok, thx!

[Tasi]

Play it on resolution which is common divisor of your monitor resolution (divide pixels by number 2).
E.g.:
if your monitor is 3840 x 2160 play it on 1920 x 1080
if your monitor is 4096 x 2160 play it on 2048 x 1080
if your monitor is 5120 x 2880 play it on 2560 x 1440

Going outside of whole divisor will make it always worse. If anybody will tell you

Originally posted by Julius Borisov:

I prefer to play at 1680*1050

then you have to ask what is their monitor resolution (and very likely it is this 1680*1050 otherwise the game will look worse).

Just note: To be honest graphics of the game is not that great so I doubt you will see any difference anyway... back in the days we were used to play it on resolutions like 800x600...

[M€M3!N$]

So screen size Isn’t a factor?

[Tasi]

If you mean size (width) in centimetre/inches then yes and no... what matters is angle (not really the width). And that angle is nothing more then:

2* arc tan (monitor width / (2 * distance))

So it means that if you increase the distance from your monitor by factor of 2 and in the same time you will increase width (size) of your monitor by factor of 2 you have not changed (from the perspective of being able to see more details) anything (because the angle is the same).

On the other hand the info I gave you previously:

Originally posted by Tasi:

Play it on resolution which is common divisor of your monitor resolution (divide pixels by number 2).

is completely different topic. If you use your screen only in resolutions which are common divisors of your screen natural (=maximal) resolution than you do not need any "rounding" (interpolations).

Example:
Just imagine that you are looking at square 1 pixel high and 1 pixel wide. If you need to scale this image (different resolution) than it is better to scale it in the way that you do not need to round (whole numbers). E.g. you can decrease your resolution by factor of 2 (and that square will be 2 pixels wide and 2 pixels high) or even 3 if you wish (that square will be 3 pixels wide and 3 pixels high). If you will not choose whole (natural) number and you will pick e.g. 2.5 scaling then that square (lets say it will be white on black background) will look as 2 pixels of white and 1 pixel of grey (that "half" pixel cannot be half black half white… effect of "rounding").

Basically you should always keep your resolution at natural resolution of your screen (or whole divisor of that number).
One more note: higher natural resolution of your screen = less visible will be the rounding
If you will add to this also relatively poor resolution of the game then I guess you will not notice any difference anyway...