Nvidia has transformed an April Fool's joke from 2018 into a real AI assistant called Project G-Assist, designed for PC gamers and creators. Unveiled for desktop users of GeForce RTX, G-Assist allows users to optimize performance, control settings, and access real-time metrics through voice or text commands. It integrates with third-party devices and aims to enhance digital experiences as Nvidia continues to innovate with new technologies in AI and quantum computing.