Purchase the game from GOG.com , which gives you a pre-configured version that works immediately on Windows 10 64-bit.
Running the original Commandos: Behind Enemy Lines on a 64-bit Windows 10 system is possible, but it requires specific configuration steps because modern hardware runs the game much faster than intended, and the installer itself is often 16-bit, which 64-bit Windows cannot run natively. PCGamingWiki Direct Fixes for Windows 10 64-Bit Fix "DirectX 5 Not Found": Rename the game executable in your installation folder from comandos.exe commandos.exe
Sites offering a standalone "Commandos_64bit.exe" download without requiring the original game data. Stick to GOG, Steam, or trusted community patches.
: One of the few digital versions that includes the original tutorial.exe and has assets fully extracted for better performance. Essential Fixes for Windows 10 (64-Bit)
