The add-on is class and also works under Windows 8 without any problems. However, the installation makes a few headaches because the add-on version 1.2 presupposes Anno 1404 but already has (even) patched to 1.3. All that remains is to uninstall Anno 1404 with the following new installation. It should be noted that Anno 1404 can be installed only in the basic version (1.0) and not yet started an online connection must be admitted, otherwise it reinstalled (even) the patches to 1.3. Then Venice needs to be installed, while the patches are 1.1 and 1.2 installed automatically. Only then may be patched to 1.3 (for Anno) and 2.1 (for Venice), the patches are important for, among other things the annoying memory bug no longer occurs. Under Win 8 installation is also in compatibility mode for Win XP make, otherwise they will not start at the first place. Then Anno and Venice runs (also under Win 8) without any problems. It would be nice if Amazon would suggest before purchasing it.