Windows 7 or newer (64-bit), macOS 10.10+, or Ubuntu 14.04+.
nVidia GeForce GTX 260 256mb or ATI Radeon HD 5670 256mb. A Note on Security Download Kingdoms and Castles v120r3
If you need a specific older version (like v120r3) and it is no longer the "Live" version, check the tab under Properties to see if the developers have made that specific build available via a drop-down menu. Windows 7 or newer (64-bit), macOS 10
Before downloading, ensure your PC meets the minimum specs to run the game smoothly: Windows 7 or newer (64-bit)