Yes. Drop .map files into the maps/ folder. The 1.3 patch is the standard for almost all custom campaigns.
: Often the most convenient for automatic updates and community support. Stronghold Crusader 1.3 Download Full Version
For the most recent versions, including the Definitive Edition, your PC should meet these specs: : Windows 10/11 64-bit. Processor : Intel Core i3-6100 or equivalent. Memory : 8 GB RAM. Graphics : 2GB VRAM for 1080p; 4GB for 4k. Stronghold Crusader: Definitive Edition - Gameplay Overview including the Definitive Edition