If you want a safe, limited trial, an English playable demo containing two levels is still available from several gaming repositories. Quick Game Overview

Castle Strike [PC] [ENG] : Related Designs - Internet Archive

If the game fails to launch on Windows 10 or 11, try setting the .exe properties to Compatibility Mode for Windows XP (Service Pack 3) and running as an Administrator.

Castle Strike stands out for its focus on 14th-century castle sieges and its unique unit management. Play as the English , French , or Germans .

Castle Strike [PC] [ENG] : Related Designs - Internet Archive

Unlike many RTS games of its era, it prioritizes warfare over complex economy management. It features realistic siege weaponry (catapults, trebuchets) that requires soldiers to manually operate them.