I'd like to confirm a couple things with you:
1. Does the player directly control a single member of their chosen alien species, a group of them like an RTS, or was it more of a hands-off Sim/God game where you play with sliders and input numbers to enact more indirect change?
2. You say the game was "shareware", but that term is usually associated with games in an episodic/split format. Do you recall if the game was broken up like that, or if it was simply labeled "shareware" by the magazine?
I'm going to make the hopefully safe assumption that the PC Player publication you are referring to is the German one. While poking around, I found a
tidy little fanpage, as well as a
nice archive of scans. Based on my own analysis, it seems that the magazine didn't have the "Plus" disks until October 1994, and the contents are usually listed somewhere in the magazine, but between my inability to read German and the messy nature of the text-recognition software that was used when scanning the text of the magazines, I didn't make any real progress in finding which of the CDs it could have been. I'm not sure of anywhere to find disc images of the CDs, either.
I am intrigued by stuff I can't find any information on, like whatever "Locopani" is, but I've got too many tabs open and too much stuff I've been doing to indulge myself for long without further clear details. Sorry.
Oh, I guess I should also ask - can you remember if the game was localized to your language? (I assume German)