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The Outer Worlds 2: Side Effects Guaranteed DLC launches December 2 for $14.99: Elysium Valley, level cap 36, new flaws and a free respec update

TNF-GAMES OPPublished · Updated 4 min de lecture
Official key art for The Outer Worlds 2: Side Effects Guaranteed from Xbox Wire: a melting moon-headed mascot in a top hat and tuxedo holds a glowing flask on a purple alien landscape, under The Outer Worlds 2 and Side Effects Guaranteed logos
Official key art from Xbox Wire · Crédit : © Xbox Game Studios / Obsidian Entertainment — Xbox Wire

Video: “The Outer Worlds 2: Side Effects Guaranteed - Official Announce Trailer”, official Obsidian Entertainment YouTube channel, published November 10, 2026 (7:05 p.m. Paris time), about 2 min. https://www.youtube.com/watch?v=Ay7aUFfZ9os
Obsidian Entertainment and Xbox Game Studios have dated the first story DLC for The Outer Worlds 2. Side Effects Guaranteed launches on December 2, 2026 for $14.99, and is also included in the game’s Premium Edition and Premium Edition Upgrade. It is the first chapter of a two-part expansion; the second part is planned for spring 2027, and your choices will carry over. Here is what the November 10, 2026 announcements on Xbox Wire and the PlayStation Blog confirm.

Release date, price and platforms

  • Release date: December 2, 2026 (Xbox Wire, PlayStation Blog, Steam page). No unlock time has been announced.
  • Price: $14.99 (Xbox Wire), or included in the Premium Edition / Premium Edition Upgrade. The euro price was not yet shown on the Steam page when we checked on November 10, 2026.
  • Platforms: The Outer Worlds 2 is available on PS5, Xbox Series X|S and PC (Steam and Microsoft Store), and on Game Pass. The DLC has a Steam page (Windows) and is announced on the PlayStation Blog and Xbox Wire. The sources do not say whether the DLC itself is included in Game Pass.
  • Languages (Steam): French text is listed; full audio is listed for English only.

Story: a cure, Elysium Valley and two Sub Rosa agents

A distress signal leads the crew of the Incognito to a derelict ship whose crew is in suspended animation, infected with something that causes “explosive cell death”. The trail leads to Gordon Hazen, a leading agent of the Sub Rosa criminal organization, who sends you to Elysium Valley, a new region on Eden with a settlement of former Protectorate subjects. Another agent, Algernon Lankester, wants your help to exploit them. The fate of the subjects, the frozen agents and Sub Rosa itself is up to you, and Obsidian says those choices will directly affect the second DLC.

What’s new in gameplay

  • Level cap raised from 30 to 36: more skill points, three more perks to acquire, and 15 new perks added.
  • Four new flaws, such as “Lethally Tolerant” (higher max toxicity, but a Toxicity Crash kills you instantly) and “Must Have Been the Wind” (kill a marked target for +20% damage and speed until combat ends; fail and you get −10% for 30 seconds).
  • Five new weapons, including the Immobilizer (makes targets float) and the 1/6 Resolver (every sixth bullet hits harder), plus a creature-damage weapon, a Tossball Stick and a new plasma weapon (PlayStation Blog).
  • New armors, new outfits for every companion, and a Sub Rosa radio station with 20 new songs.
  • New threats: vicious canids and “primal sprats”, about 100 times bigger than regular sprats.

How to start it, and the free update

  • The DLC triggers right before the point of no return in the main story.
  • Alternate start: from the main menu, a new game can jump straight into Side Effects Guaranteed with a pre-made level 27 character whose skills and perks you assign.
  • At the same time, an update for all players will let you respec your character at any time, and a new custom game option adjusts how many skill points you get per level (PlayStation Blog).

What is not specified

The announcements give no unlock time, no file size, no European price for the Premium Edition Upgrade and no name for the second DLC. We will update this article if Obsidian or the stores publish those details.
Discussion: https://tricknfix.com/topic/the-outer-worlds-2-side-effects-guaranteed-on-december-2-free-respec-and-replay-or-level-27-alternate-start-will-you-wait-for-part-2-d63661ba86/

Sources

  • Xbox Wire, Mikey Dowling (Obsidian), “Side Effects Guaranteed in the First DLC For The Outer Worlds 2, Coming December 2”, November 10, 2026 (https://news.xbox.com/en-us/2026/11/10/side-effects-guaranteed-the-outer-worlds-2-dlc/), read November 10, 2026.
  • PlayStation Blog, Mikey Dowling, “The Outer Worlds 2’s first DLC arrives December 2”, November 10, 2026 (https://blog.playstation.com/2026/11/10/the-outer-worlds-2s-first-dlc-arrives-december-2/) (weapons, alternate start at level 27, respec update), read November 10, 2026.
  • Steam, The Outer Worlds 2: Side Effects Guaranteed store page (https://store.steampowered.com/app/4465910/) (December 2, 2026 date, Windows, languages), read November 10, 2026.
  • Obsidian Entertainment, “The Outer Worlds 2: Side Effects Guaranteed - Official Announce Trailer”, YouTube, November 10, 2026 (https://www.youtube.com/watch?v=Ay7aUFfZ9os).
  • Gematsu, “The Outer Worlds 2 DLC ‘Side Effects Guaranteed’ launches December 2”, November 10, 2026 (https://www.gematsu.com/2026/11/the-outer-worlds-2-dlc-side-effects-guaranteed-launches-december-2), read November 10, 2026.
Image: official key art for The Outer Worlds 2: Side Effects Guaranteed, Xbox Wire, © Xbox Game Studios / Obsidian Entertainment. Original: https://xboxwire.thesourcemediaassets.com/sites/2/2026/11/XBOX_TOW-Expansion_KeyArt_Horizontal-3ff701b040bc3de8c709.jpg
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