➀ Microsoft has announced that future Halo titles will be developed with Unreal Engine 5, following the failure of the Slipstream engine for Halo Infinite. ➁ 343 Industries is now known as Halo Studios and is rebuilding with multiple Halo games in pre-production. ➂ The team has been experimenting with Unreal Engine and is now fully committed to it, similar to CD Projekt Red's approach with Cyberpunk 2077.