Visit one of the websites mentioned above (FileHippo, CrackHub, or GameFAQs) and search for "Prototype 1 no CD crack." Download the crack files, which usually come in a ZIP or RAR archive.

In the location box, paste the following command (adjust the game path if you installed it elsewhere): cmd.exe /c start "" /Affinity F "C:\Program Files (x86)\Steam\steamapps\common\Prototype\prototypef.exe"

Download a trusted disc imaging tool like or CDBurnerXP .