To get access to that, you must have a EpicGames account and it must be linked to your Github Account.The Unreal Engine End User License Agreement is the legal document that governs your use of the Unreal Engine and describes your rights and obligations with respect to the projects you create using the engine. You can download source code from GitHub (But their repository is Private). You will have to get specific permission to get the developer code of unreal engine. If you want a specific version, you have to follow the instructions given below. You cannot install Unreal Engine directly through pacman.Though it is available in AUR, it will only have the latest version.

Please make sure that you at least meet the minimum system requirements and are running a native Arch Linux(not a Virtual Machine), with NVIDIA or AMD graphics drivers. Quad-core Intel or AMD processor, 2.5 GHz or faster NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series card or higher Minimum 8 GB RAM

So in this blog I will share how I installed Unreal Engine 4 from Epic Games in Arch Linux.

But I could not find any tutorial or blog-post specifically regarding Arch Linux. There are many tutorials on how to install Unreal Engine 4 in Linux/Ubuntu. How to install Unreal Engine 4 in Arch Linux ?

Unreal install