The original game was built for MS-DOS, so it won't run directly on Windows 10 or 11 without help.
: Features the game files and community technical support for running it on modern systems Abandonia. 🛠️ How to Play on Modern Windows Battle Isle Free Download
: A low-cost bundle on GOG that includes Battle Isle 1 , 2, 3, and Incubation , pre-configured to work on modern PCs. The original game was built for MS-DOS, so
Since the original game is now considered abandonware, you can find it on several preservation sites: Battle Isle Free Download