To download Unreal Engine 4.12, you must use the Epic Games Launcher. Because it is an older version, it is not the default "Install" option, but it is easily accessible through the library archives. Step 1: Install the Epic Games Launcher
Because 4.12 is an older build, it is than modern UE5. However, you still need a capable machine. Unreal Engine 4.12 Download
: A new animation tool to help prevent "candy-wrapper" mesh deformation on character limbs. Technical Requirements & Stability Unreal Engine 4.12 Released! To download Unreal Engine 4
NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series or higher. To download Unreal Engine 4.12