+ wishlist Introduction to 3D Game Engine Design Using DirectX 9 and C# [9781590590812] Add to Cart The item has been added Author: Marshall Harrison Introduction to 3D Game Engine Design Using DirectX 9 and C# [9781590590812] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 99 30% 100 - 249 32% 250 - 499 34% 500 - 999 36% 1000+ 38% List Price As Low as $44.99 Format: Paperback