Using a No CD patch to play a game you legally own is widely considered fair use in many jurisdictions, as it simply enables you to play a product you paid for. However, downloading patches for games you do not own is illegal piracy.
Always scan downloaded .exe files through an aggregator like VirusTotal before moving them into your game directory.
On Windows 10 or 11, double-click the ISO file. Windows will automatically create a "virtual" CD drive and mount the image. Launch the game.
Because No-CD patches are modified binary files created by third parties, they are frequently targeted by malicious actors. Cybercriminals sometimes bundle malware, trojans, or crypto-miners into fake game patches.