Hello, I have some questions: 1. What kind of hidden-surface-detection is used in "racing-simulation"-games (i. e. Star Wars Racer)? 2. Is it good and fast to use BSP-Trees in those games for HS-removal? 3. How can I implement FOV-clipped-rendering with the use of BSP-Trees or is this not possible? Maybe, someone can reply to these questions, it would be a big help. TIA, Curd