And how tempting it was to just click away.) In Battlemode, one player is the Doom Slayer, while two others control demons that can summon AI-controlled demons, and even lay traps. (We did see it on the main menu screen, however. Unfortunately, we didn't get hands-on with the Invasion mechanic, nor Doom Eternal's prominent new Battlemode multiplayer that's replacing the standard arena deathmatch. And it's exciting knowing there's a fresh 'invasion' mechanic en route as well, in which other players will be able to invade each other's single-player games as demons, Dark Souls-style. Judging from just Doom Eternal's first three hours, it's glorious. The campaign is the star, as it was on accident for Doom (2016), and it feels like the marketing knows where the game’s true appeal lies this time. Rather than a core pillar, it's being pitched as an experience that will complement Doom Eternal's lengthy campaign. That's why for Doom Eternal, id Software is rethinking its multiplayer, and in a sense, reprioritizing it too.