Do you have an original version of the game?
In the original one you will have to enter a code from the manual.
There are probably sites where you will find the codes, but you must seek them yourself.
If it's from Abandonia, then maybe try downloading again?

I found A saved game in a Ufo Defense site
You already have the 8 bases and the best Armours and stuf!
If anybody can t reach far they can download this for free

Linky?

There isn´t codes or keys in this site version

Nope
And i prefer to got 4 or 5 bases before get a big workshop or even a big lab.

They should make a key called "any" like the keys "ecp", "ctrl" or "alt".
But the post: where its the any key? Its a joke from Simpsons

Sounds like you have an old DOS version, either 1.0 or 1.2. I think www.xcomufo.com has the 1.4 patch or perhaps the codes. Be warned though, the patch messes up lots of the sounds.

This is the longest discussion of any game on this entire forum!!

That was me above.

It sure is. :D

I wouldnt expect any less for such a great game. Its the reason that I can here in the first place.

This thread also makes any strategy guide quite usless. Im tellin' ya there is gaming gold in this here thread! GOLD!!

I have to disagree. The great bulk of this thread, 156 pages and counting, makes it a very poor strategy guide. Especially if some newbie's question is answered with a flippant "We already answered that question". It may be just me, actually reading all of the old posts is quite a challenge, but I am shackled to a 28.8 modem connection. If I had never played MOO on a 386, I wouldn't surf, at all. A proper strategy guide is a long page of text that loads quickly, or better yet prints nicely (I am a big fan of the dead tree filing system [DTFS]).

What it is good for is discussions about the game that would not be included in a strategy guide. An example is that a guide might mention that you should avoid shooting down UFO's in the mountains, as the terrain is worse than the jungle. I would suggest that you do it at least once, as you will never find a UFO landed there and the programmers did go through the trouble of putting it in the game. Surprise, surprise, the reason that mountainous terrain is worse than jungle terrain is that high explosives do not make it go away. Do make sure it is a small one, as it might escape before flying over mountains.

As mentioned before, you could download the version available for download here. The advantage is that it's the "latest" version, meaning v1.4 that includes a few patches compared to 1.0 or so that asked the code questions.
However, since this game is considered as abandonware here, I suppose no one would mind if I tell you to have a look for the codes here: http://ninjaw.ifrance.com/cd32/_ufocd32/index.html

(they're in the links "protection codes 1" and 2, no idea what's the difference between both)