Just a legal comment to refuse false statements: This version bases on a legal buyed version which got no longer supported and developed by the original programmer, so that the bought version worked no longer proper. Means: it was a betray. Customers bought a program and after that the programmer says he gives it up because he sold the right of another version under a similar name to another one.
Archi made that abadoned and not working version working proper with an addon, now payable with lot of features to be a full Addon to the old version, means, the legal buyer of the old version now could run the game fine with that addon, if they have the buyed but not working old abadoned version.
Because this, that one who got the right for the alternative version has no rights on this addon. The download here is no hack, no illegal copy, it is a legal free copy for all those who have the abadoned, old not working version. Archie delivered that for free what had been the duty of the original programmer/seller.