Recently, Activision officially announced Call of Duty 19: Modern Warfare 2 and Call of Duty: Warzone 2, both of which were developed by IW using the same new engine. In an interview with YouTuber Jackfrags, IW co-leader Patrick Kelly confirmed that all future Call of Duty games will be developed using the same engine.
Kelly said their new engine will be “much better” than the current software toolset. While each studio wants to make sure the franchise isn’t too homogenous, using the same engine will make future integrations much simpler.
The three studios, IW, Treyarch and Sledgehammer, took turns leading the development of the Call of Duty game, but each studio used its own version of the Call of Duty engine, and while this was no problem in the past when Warzone arrived, the problem is more of a headache.
This free battle royale game must integrate with Call of Duty: Modern Warfare in 2019, Call of Duty: Black Ops Cold War in 2020 (using a different engine), and Call of Duty 18 in 2021: Vanguard integration (same engine as Modern Warfare).
Unsurprisingly, this has created a lot of problems for Raven Software, the developer behind Call of Duty: Warzone, and fixing these piles of technical issues has become increasingly challenging.