When the old computer did not work with the ms-dos version, to the rescue -- the Collector's Edition.
Later on I did get a old computer that worked better, than crash, crash, crash, back then. Then one day around Christmas back in 1999, I saw the Collector's Edition. Thought oh well, buy it again, since it had all three original X-Com games with it. It is sitting in my harddrive as I write this. Concerned after buying the ms-dos version of Apocalypse, and again crash, crash, crash, that game immmediately ran better, and although updated in a way with Direct X 6 version, it still was mainly dos-based with the version, but ran in Windows 95. To this day, with old Windows 98, the first two games run fast, but again Apocalypse runs about the same, maybe a just a little-bit faster, but nonetheless, after several computers and this game running about the same, it is the best game to run on a newer computer. The first two games UFO: UFO Defense, and Terror from the Deep, glug, glug, glug -- blow the man down -- run after turning off DirectDraw and downloading older drivers for my Geforce card. Although they run faster, I gotten use to those two games responding faster, although there are forums for info about slowdown programs, some of which work better for ms-dos games than for Windows based games.
The main thing after the old computer just does not work anymore with the motherboard, is that I still can play these games with my slightly older computer or my newer computer still to this day. Some people have done the homework to keep these games running along and played to this day.
Phenomenal is the price some people want for this version of the game, as what I paid for it was really cheap, but hey, back then, a few weeks later it was even cheaper. If I mentioned the price, you would gasp, as much as you will playing these games. The definitive game about much to do with the entire subject of UFO's still to this day. Abducted by the game, but not by spacealiens or have I seen any UFO. Still, one has to consider that if all of that is real as discussed, whether i would invite them in, to update these games for the future. Maybe they are friendly, perhaps not. They invade our skys, people say, and do weird things to us humans. So will the games, as you play those old games. We feel your pain in a sense, but not with any real reality, but the games will stop and make anyone perhaps think about it all.
Hoping your not an alien hybrid or something not akin to actually being full human.