Epic Games today announced Square Enix as the first publicly-confirmed publisher to license its Unreal Engine 4. Square Enix will have full access to both Unreal Engine 3 and 4, and use those alongside its own new proprietary Lumious Studio engine technology. The Epic agreement will see Square Enix using Unreal Engine 4 for game development over the next few years, for multiple upcoming releases. Most recently, Square Enix used Epic's Unreal Engine 3 to create iNiS-developed mobile game Demons' Score for iOS and Android. In July this year, Epic announced its own internally-developed game Fortnite would be its first Unreal Engine 4-powered game.