Now officially integrated in Unreal Engine, getnamo’s independent plugin is available with Unreal Engine 4.11 and features rigged character hands,
To get the plugin started you just need to download the latest version of Unreal Engine and follow the instruction below.
Quick setup guide:
To try the rigged or floating hands characters, change your game mode to use LeapRiggedCharacter or LeapFloatingHandsCharacter as your default pawn.
And here are the requirements:
Source: Leapmotion