Space Marine 2 Chaos Siege Mode is free and arrives with Patch 15 on 1 October 2026: play Chaos Marines on Avarax and deploy a Helbrute. What’s known.<\/p>","protected":false},"author":4,"featured_media":7011,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[433],"tags":[],"blog_tag":[],"class_list":["post-7008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-warhammer-space-marine-2"],"acf":{"redactor":[{"acf_fc_layout":"text","text":"
Space Marine 2’s Chaos Siege Mode arrives with Patch 15 on 1 October 2026, and it is free: Saber announced it as part of Year 3’s free content. You play as Chaos Space Marines on a new Siege map on Avarax, hold out against Tyranid and Loyalist waves, and can deploy a Helbrute. Here is what that means next to the Siege you can play today, and what Saber has not shown yet.<\/p>\n"},{"acf_fc_layout":"text","text":"
TL;DR<\/p>
Focus Entertainment dated Patch 15 for 1 October 2026<\/a>, and Saber’s August Community Update<\/a> puts Chaos Siege in that patch. The same post says Season Pass 3 “will also be available on the same day” as the Second Anniversary Update.<\/p>\n On price, the June Community Update<\/a> lists the Chaos “spin-off” of Siege under “the free content that will be added in Year 3”, and only after that turns to “the cosmetic DLCs” of Season Pass 3. So the mode itself is free; Season Pass 3 is the paid cosmetic side of Year 3.<\/p>\n"},{"acf_fc_layout":"title","heading":"What Is Chaos Siege Mode?","tag":"h2"},{"acf_fc_layout":"image","image":7009,"caption":"Illustration: Cultists battle amid rubble as a spiked Helbrute smashes through a burning gate.","alt":"Chaos cultists fire near ruins while a horned Helbrute crashes through a gate under smoky dusk sky."},{"acf_fc_layout":"text","text":" Saber’s description is one paragraph: “In this mode, you’ll play with Chaos Space Marines on a brand new Siege map located on Avarax. You’ll face Tyranids and Loyalists waves, receive the support of Chaos Cultists and Ritualists, and you’ll be able to deploy a Helbrute to wreak havoc on the battlefield.”<\/p>\n The June update framed it the same way: you will play “characters that were once limited to PvP only”. Until now Chaos Marines have been playable only in Eternal War, and the closest thing to a playable Helbrute was Patch 10.0<\/a>’s Helbrute Onslaught, a PvP mode.<\/p>\n"},{"acf_fc_layout":"title","heading":"Chaos Siege vs Regular Siege","tag":"h2"},{"acf_fc_layout":"text","text":" Regular Siege is the free wave mode on Kadaku; our Siege Mode guide<\/a> covers its shop, wave scaling and bosses. Side by side, the announced differences look like this.<\/p>\n"},{"acf_fc_layout":"table","headers":[{"header_text":""},{"header_text":"Regular Siege"},{"header_text":"Chaos Siege (Patch 15)"}],"rows":[{"cells":[{"cell_text":"You play"},{"cell_text":"Loyalist Space Marine classes"},{"cell_text":"Chaos Space Marines"}]},{"cells":[{"cell_text":"Map"},{"cell_text":"Imperial fortress on Kadaku, three rotating sectors"},{"cell_text":"New Siege map on Avarax"}]},{"cells":[{"cell_text":"Enemy waves"},{"cell_text":"Tyranids and Thousand Sons"},{"cell_text":"Tyranids and Loyalists"}]},{"cells":[{"cell_text":"Your support"},{"cell_text":"Summoned elite Space Marines, Cadian Troopers, a Dreadnought"},{"cell_text":"Chaos Cultists and Ritualists"}]},{"cells":[{"cell_text":"Helbrute"},{"cell_text":"Enemy"},{"cell_text":"Yours to deploy; direct control not stated"}]},{"cells":[{"cell_text":"Price"},{"cell_text":"Free"},{"cell_text":"Announced as free Year 3 content"}]}],"size":"small"},{"acf_fc_layout":"text","text":" Regular Siege facts: enemies and the Helbrute from Saber’s Siege launch announcement<\/a>, reinforcements from the Patch 8.0 notes<\/a>.<\/p>\n"},{"acf_fc_layout":"title","heading":"What Saber Has Not Shown Yet","tag":"h2"},{"acf_fc_layout":"text","text":" The mode is not out, so there is no build or “best class” advice here. We will update this page from the Patch 15 notes on release.<\/p>\n"},{"acf_fc_layout":"title","heading":"What Else Ships in Patch 15","tag":"h2"},{"acf_fc_layout":"image","image":7010,"caption":"Illustration: Ruined Gothic archway with chains overlooks distant smoky cathedral spires at dawn.","alt":"An old stone archway partly lit by dawn light through smoke, framed by chains and banners."},{"acf_fc_layout":"text","text":" Our Take<\/p> The most interesting idea in Patch 15, and the least explained.<\/p> Holding a line as Chaos, with Cultists at your side and the Helbrute that used to charge you now charging for you, is a real change from Siege on Kadaku, and it costs nothing. Whether it lasts depends on what Saber has not shown: classes, progression and rewards. Until the Patch 15 notes are out, it is a promising paragraph rather than a mode to plan around.<\/p><\/div>\n"},{"acf_fc_layout":"text","text":"\n
\n
Sources and Confidence<\/h2>\n
Claim<\/th> Source<\/th> Status<\/th><\/tr><\/thead> Patch 15 on 1 October 2026<\/td> Focus Entertainment on X, 12 Sep 2026<\/a><\/td> Official<\/td><\/tr> Chaos Siege: Chaos Marines, Avarax, Tyranid and Loyalist waves, Cultists, Ritualists, Helbrute; Season Pass 3 the same day<\/td> Saber, August Community Update, Steam, 28 Aug 2026<\/a><\/td> Official<\/td><\/tr> Chaos Siege listed as free Year 3 content; Season Pass 3 = cosmetic DLC<\/td> Saber, June Community Update, Steam, 25 Jun 2026<\/a><\/td> Official<\/td><\/tr> Regular Siege: Tyranid and Thousand Sons waves, Helbrutes as enemies<\/td> Saber, The Siege Update, Steam, 26 Jun 2025<\/a><\/td> Official<\/td><\/tr> Regular Siege reinforcements: elite Space Marines, Cadian Troopers, Dreadnought<\/td> Patch Notes 8.0, Steam, 26 Jun 2025<\/a><\/td> Official<\/td><\/tr> Five Year 3 updates, Patches 15 to 19<\/td> Saber, May Community Update, Steam, 29 May 2026<\/a><\/td> Official<\/td><\/tr><\/tbody><\/table>\n"},{"acf_fc_layout":"faq","items":[{"question":"When is the Space Marine 2 Chaos Siege release date?","answer":"With Patch 15 on 1 October 2026, the Second Anniversary Update. Season Pass 3 launches the same day."},{"question":"Is Chaos Siege free?","answer":"Yes. Saber announced it as part of Year 3\u2019s free content. Season Pass 3 covers cosmetic DLC and is a separate purchase."},{"question":"Can you play as a Helbrute in Chaos Siege?","answer":"Saber says you \u201cwill be able to deploy a Helbrute\u201d. It has not said whether you control it directly or call it in as an ally."},{"question":"How is Chaos Siege different from normal Siege?","answer":"You play Chaos Space Marines on a new Avarax map instead of Loyalists on Kadaku, face Tyranids and Loyalists instead of Tyranids and Thousand Sons, and get Cultists, Ritualists and a Helbrute as support instead of Space Marines, Cadian Troopers and a Dreadnought."},{"question":"Do I need level 25 for Chaos Siege?","answer":"Not announced. The level-25 requirement Saber described belongs to Crucible Mode, not Chaos Siege."}]}],"bottom":[{"acf_fc_layout":"more_articles","heading":"","posts":"","count":10},{"acf_fc_layout":"chat","heading":""}],"meta_description":"Space Marine 2 Chaos Siege Mode is free and arrives with Patch 15 on 1 October 2026: play Chaos Marines on Avarax and deploy a Helbrute. What's known."},"_links":{"self":[{"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/posts\/7008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/comments?post=7008"}],"version-history":[{"count":3,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/posts\/7008\/revisions"}],"predecessor-version":[{"id":7018,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/posts\/7008\/revisions\/7018"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/media\/7011"}],"wp:attachment":[{"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/media?parent=7008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/categories?post=7008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/tags?post=7008"},{"taxonomy":"blog_tag","embeddable":true,"href":"https:\/\/neonsect.com\/es\/wp-json\/wp\/v2\/blog_tag?post=7008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}