I was taking a look at those tonight, to see how they differed from the original versions. There seems to be an imnportant difference (aside from the .exe files) between the trial and the full version in that the map files (in the Huntdat\Areas folder) apparently are compressed and the .exe uncompresses them on-the-fly, though I don't know what method is used. The trial won't allow you to use ALT-TAB, either. If only they had based them on the final patches instead of the original releases... I don't know if this means that the patches can't be applied to the trial versions after registering them or not.
Now I'm glad I started working with the full versions, as figuring the file format from the compressed files would have made it more difficult.
Any idea which compression algorithm would insert a string like TMSAVO both near the beginning and end of the file?
The Carnivores 2/Ice Age trial versions
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