Testament has partnered with KnuckleBonz to create a branded immersive 3D digital world within the forthcoming KnuckleBonz360 BackStage Experience platform. The initiative is intended to give fans a shared online space to explore the band’s imagery and history, connect with other listeners and access exclusive merchandise.

The Testament Experience is due to launch in summer 2026 alongside more than 20 other band-themed worlds. It will include multiplayer exploration, mini-games, digital and physical collectibles, and merchandise shipped internationally; KnuckleBonz says its platform will bring album artwork and other artist visuals to life. Testament frontman Chuck Billy described it as a new way for fans to connect directly with the band.