when the ****ing hell did i say huge?
do me a favor and NEVER presume something i didn't say
ever
i mean it
that pisses me off ESPECIALLY IN ARGUMENTS
Andromeda is big enogh that it was considered a nebulae before we knew there were other galaxies!
Even under suburban skies you should be able to see it with your naked eyes, as a 1° fuzzy patch of light. If you live in an area with heavy light pollution, try to find it with binoculars (or your finderscope).
http://www.backyard-astro.com/focusonarchive/andromeda/andromeda.html
more accurate:
M31 is 178x63 (arc min) http://www.seds.org/messier/m/m031.html
the LMC is 650x550 (arc min) http://www.seds.org/messier/xtra/ngc/lmc.html
the SMC is 280 x 160 (arc min) http://www.seds.org/messier/xtra/ngc/smc.html
so the answer to your question is: Yes, they can be naked eye distinguishable!
In a game? At normal resolutions?
I'll admit, I got seconds backwards, meaning to say minutes. Silly conversion and I do know better. But the horizontal angle in FS is supposed to encompass at least what, 45 degrees? More? I can't remember what the default FOV actually is, but that would tell you. At that scale, two arc minutes would be represented by about a pixel, give or take, at most "standard" resolutions. One pixel drops down to closer to 1.5 arcseconds at 1600x1200. At that scale, the argument becomes making them a placeable bitmap, not part of the starfield. But that's not really my point.
I've done a fair bit of stargazing in my day, and while I have used a (relatively powerful) telescope to actually look at Andromeda before, I can certainly say that it's not something that just leaps out of the night sky at you. Even if you know what you're looking for, you can see that it's there and that it's perhaps blurrier than its neighbors, but you can't say "gee, that's really big in comparison" because the part of it that has an apparent magnitude greater than six is not substantially bigger than a star. You can't make out the disk with the naked eye, and you can't see its full extents without masking the residual starlight from around it. It's not like I'm living in a cave here; I'm talking out of personal experience and it just isn't big enough IMHO to put in to a game at all. Now the magellenic clouds, on the other hand, are outside the scope of this discussion. One, they aren't disks, and really are hard to distinguish from an ordinary clump of stars if you don't realize what they are. Two, they aren't highly structured, so clumping a bunch of stars together would do fine. I've never been south of the equator so I don't know what those clouds look like from a normal perspective, but they certainly don't fit in the same argument as "look at this disk, isn't it pretty."
Also of real importance is that Freespace is a space combat game, not an astronomical simulator. If someone playing it is sitting there long enough to go "hey, that's not a star, it's a
galaxy" then something is seriously wrong. Unless you want them large enough to be trackable features, in which case they should be done as background bitmaps using the system we already have. Either-or. There is absolutely no reason to spend time that could be better spent elsewhere implimenting something that, when all is said and done, will be either virtually unnoticable or just downright silly.