Hi!

There is more that just one "original" game GalCiv.

The true original was written for OS/2. IMO you're asking for the windows GalCiv and its expansion. For that version I'd say it is worth 99 cents. If nothig more, then just to see how much the game design and AI has evolved. Game is still playable (heck, I finished one about a year ago on my very old portable), but I wouldn't return to it - the AIs play too much by their own rules.

BR,  Iztok   

It's outshined by its sequel.   I played Galciv1 when it first came out, before its expansion.  Just stick with ToA, save your time, save your disk space.   The 99 cents doesn't matter much either way.