Andrej Karpathy experimented with an LLM, asking it to generate a 3D animation of a scene from the Lord of the Rings based on a text prompt. The LLM produced 5500 lines of code and a render of the scene, although it was somewhat janky. Karpathy notes that LLMs have the potential to create custom worlds and games, but are currently limited by their inability to efficiently perceive videos or play games. This limitation hinders their ability to audit their own work and create more complex outputs.