it goes in the same folder as the exe, this game harks from the days when the demo and the unlock file make the full game
its also been too long for me to remember the difference, but id go for whichever was uploaded latest
its specifically Damsel Quest, The Trade and Deepground Lab
i just tried running Damsel Quest as an admin but it did not work
Damsel Quest and The Trade are having problems with "unsupported compression algorithm" while Deepground Lab has a problem with "No manager for installer unknown"
also sorry about this realms