The program can be installed under normal W8.1. The activation runs under W8.1 without any grumbles something. In W7 compatibility mode it does not work then but. The uninstaller under W8.1 is not free gegebenn the license, so that the installation on a W7 computer then to the activation failed (message: "Product already activated").
It has lasted for 3 weeks after a complaint, but I eventually get a new license code, and then allowed to install on a W7 computer.
The game itself is very well done, but indeed have the other recessions breits said.
