Patrician IV: Rise of a Dynasty offers players an exciting and fresh trading challenge with eight new cities to explore and introduces a multiplayer co-op mode for up to four players via the Internet or LAN. There are no refunds for this item. Digital Rights Management Disclosure. This software uses digital rights management software (“DRM”). DRM may limit the number of times you are permitted to install this software on a computer and/or the number of computers to which you may install the software. To function properly, DRM downloads certain data and files to your computer, which may or may not be uninstalled when you uninstall the software.