GOG patches the game with a pre-configured DOSBox or their custom wrapper (ScummVM) that emulates Windows 98 perfectly.
The original game installed (e.g., C:\Commandos ), and a file called dgVoodoo2 . how to play commandos behind enemy lines on windows 10
Oracle VirtualBox (free) + a Windows 98 ISO (you provide). GOG patches the game with a pre-configured DOSBox
The HD version uses a modern engine but keeps the exact same gameplay, sprites, and difficulty. It runs natively on Windows 10, supports 1080p/4K, and has working saves. and has working saves.