Warzone players confused as Pacific uses Modern Warfare engine instead of Vanguard

Warzone players have been left confused after it was confirmed that Pacific and the new Caldera map will not switch over to the CoD: Vanguard engine and technology, despite what was previously believed.

The Vanguard integration with Warzone has been hotly anticipated for some time now. With a fresh map and a major overhaul to the battle royale title, players have been eager to sink their teeth into it since it was announced.

Warzone Pacific Caldera map

With the firstWarzone Pacific Season 1 patch notesnow out, gameplay on show and a series of announcements, though, some questions have been raised about the game.

The main one of these is around the engine in Warzone, and it’s left people a little confused.

Hotel Royal map in Call of Duty Vanguard

In the past, Activision and developers Raven said that Warzone Pacific would be sharing Vanguard’s tech and engine, but that doesn’t seem to be the case.

Based on the early gameplay from top YouTubers and streamers, the game seems to be sticking with the Modern Warfare mechanics that made it so popular.

park operator in warzone season 5

Call of Duty League caster and former pro player Joe ‘Merk’ DeLuca was one of the first to respond, saying that he was “confused” about what was happening with the engine and mechanics.

Okay I was also confused on this

Warzone player firing weapon on Verdansk

— MerK (@JoeDeLuca)July 11, 2025

For many players, this meant one thing, and they’re letting their voices be heard in response to the idea that a FOV slider on console might still not be coming.

warzone amax

“No FOV confirmed” wrote one respondent to CharlieINTEL’s tweet, and a search for ‘Warzone FOV’ on Twitter will get many complaints of the same nature.

Lmao no fov confirmed

— Cameron (@RTXCam)July 26, 2025

This has left players asking the question, though, of why the engine and mechanics haven’t been shifted to that of Vanguard, rather than Modern Warfare’s 2019 movement.

Warzone Season 5 update patch notes

Warzone players have big wishes for Verdansk map changes

Warzone trailer secretly reveals return of two iconic Modern Warfare guns

While this might help with continuity, it definitely isn’t what people were expecting.