Watch The Surge 2: Behind The Scenes -The Evolution Of The Fledge Engine- (2019) : Full Movie Online Free A behind-the-scenes look at the development of The Surge 2 - the story of how Frankfurt-based Deck 13 created its own engine - Fledge - and enhanced/refined it for this new release. It's an in-depth look into a modern rendering engine and the new features added for the game.