Warhammer 40,000: Space Marine 2 is getting a new brutal co-op mode this summer. The long-awaited horde mode is almost here, and it’s called Siege. Grab two friends, prepare your best loadout & weapons, and get ready for an endless onslaught.
The announcement arrived during the Warhammer Skulls 2025 showcase alongside other game reveals and relevant news on the video games front of both the Warhammer Fantasy and 40K universes. You can watch the first trailer for the update below:
The official press release reads as follows: “Fight against impossible odds in Space Marine 2’s upcoming Siege Mode, a new PvE experience available for free to all players on June 26. Set on Kadaku, this new 3-player game mode lets you take down ever deadlier waves of Tyranid and Chaos enemies in the defense of an Imperial Fortress. Prepare to hold your ground and stay alive as long as you can facing endless waves of enemies, as only in Death does duty end.”
Moreover, this new Siege mode will be playable on the Public Test Server (PC/Steam) starting on June 4. We’re expecting more details about the mode to arrive with the next monthly Community Update.
Alongside the massive new mode, two new chapter and cosmetic packs are coming for owners of the Ultra & Gold editions and season pass holders:
- White Scars Chapter Pack: “Champion skin for the Assault class, three exclusive White Scars-inspired weapon skins for the Occulus Bolt Carbine, Stalker Bolt Rifle and Combat Knife, and a host of cosmetic options and heraldry markings for their Successor Chapters.”
- Blood Angels Cosmetic Pack: “New armour pieces to be equipped on any of the game’s playable classes” plus “heraldry markings celebrating eight of the Blood Angels’ Successor Chapters.”
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