The Jade Engine is a proprietary game engine developed by Ubisoft, primarily known for its use in the critically acclaimed Teenage Mutant Ninja Turtles (TMNT) video game series. This engine was instrumental in creating the distinctive visual style and fluid combat mechanics that defined the TMNT games of the early 2000s. Its capabilities allowed for vibrant, cel-shaded graphics and responsive gameplay, contributing significantly to the success and memorable experience of these titles. The Jade Engine represents a key piece of Ubisoft's early 3D game development history.