虚幻引擎
Following the cancellation of "Paragon" on March 19, 2018, developer Epic Games, and the owner of Unreal Engine, announced that it would release all $17,000,000 worth of game assets for free use by anyone working with the Unreal Engine 4, via the Unreal Engine Marketplace. The first wave of released content included 20 characters, with their respective skins, animations, VFX and dialogue, along with over 1,500 environment components.