Rez is a musical rail shooter developed by United Game Artists and published by Sega for the Dreamcast and PlayStation 2. Following a hacker's journey into a malfunctioning AI system, the game has players controlling their avatar as they shoot down numerous enemies. The gameplay and projectile hits sync with the music and have vibration feedback for different controllers, aiming to create a sense of synesthesia. The narrative is told using little description and no dialogue and includes thematic references to the journey of life and technological singularity.