To run this 2004 title on modern hardware, you may need to use compatibility modes for Windows XP or 2000. : 1GHz processor. Storage : Approximately 1.5 GB of disk space.
: Originally designed for Windows 98, ME, 2000, and XP. Besieger (2004) - Dreamlist - GOG.com
: You can browse the "PC Games 2004" collection for original disc backups and related media. System Requirements
: Offers the game files for Windows, noting its historical status as an RTS title featuring Norse mythology.
: Another repository where you can find the full 603 MB download and screenshots of the gameplay.
Since the game is now considered "abandonware," it is no longer sold on primary digital storefronts like Steam or GOG (where it is currently only on a community "wishlist"). However, you can find it on various archive and preservation sites: