Unreal Engine 5 Portable Online

You must first install UE5 via the Epic Games Launcher on a machine with internet access. Once installed, you can copy the entire engine version folder (e.g., UE_5.x ) to your external drive. Essential Requirements for Guest Machines

If you are a developer aiming for mobile or handheld, follow this checklist: unreal engine 5 portable

It depends on your goal.