# The Outlast Trials Major Update | New Invasion Experimental Therapy, Geister is Back & More - Product: The Outlast Trials (https://whatsnew.fyi/product/the-outlast-trials) - Vendor: Red Barrels - Date: 2025-10-21 - Original notes: https://store.steampowered.com/news/app/1304930/view/632317708781750291 - Permalink: https://whatsnew.fyi/product/the-outlast-trials/releases/2025-10-21-major-update-new-invasion-experimental-therapy-ge What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **added** — Introduce INVASION game mode as a permanent Experimental Therapy where player-controlled Imposters invade Trials to kill Reagents - **added** — Add Imposter role allowing players to invade Trials, mimic Reagent appearances, and wield knives to kill Reagents - **added** — Add Reagent role where players complete Trials while risking invasion by player Imposters - **added** — Add surveillance camera system allowing waiting Imposters to gather intel while monitoring Reagents - **added** — Add Imposter Chems as upgrades for the Imposter role available from Barlow the Pharmacist - **added** — Add Invasion-specific Tasks category with new tasks that can appear in random daily Tasks pool - **added** — Add ability for Reagents at Therapy Level 30 to be invaded by Imposters across all Trial types via privacy settings - **added** — Add direct invasion feature allowing friends to invade your Trial when privacy settings permit - **added** — Add two new MK-Challenges: Beguile the Children and Investigate the Minotaur - **added** — Add new Limited-Time Event Geister 2025 - **added** — Add new Limited-Time Catalog for Geister 2025 - **added** — Add Featured Trial Maker Creations feature - **added** — Add in-game Store to browse exclusive outfits, DLC packs, and items from past Event Catalogs - **added** — Add Twitch Drops Special Event running until November 18 with exclusive rewards - **changed** — Revamp Catalogs Screen interface - **changed** — Invasion difficulty scales progressively with match count, starting with minimal Trial pool and adding Ex-Pop Specialists after 50 matches - **changed** — Imposters hear the voice of their victim when they kill, with option to disable in Pause menu ##### Greetings Reagents, A new update is upon us, and this time, no one's safe... Take a stab at our new **permanent Experimental Therapy, the Invasion Game Mode**, letting real Reagents slip into your Trials as knife-wielding Imposters. You’ll also find **two new MK-Challenges**, a return** to Program Geister** with a new Limited-Time** Catalog**, to go along with it, and an **in-game Store** to browse exclusive outfits, DLC packs, and items from past Event Catalogs. Don’t miss the **Twitch Drops** running until **November 18**, featuring exclusive rewards to keep your Reagent looking deadly sharp. 🔪 ##### This update includes - Introducing INVASION game mode - New Limited-Time Event: Geister 2025 - New Limited-Time Catalog: Geister 2025 - New MK-Challenge: Beguile the Children - New MK-Challenge: Investigate the Minotaur - Introducing Featured Trial Maker Creations - New Twitch Drops Special Event - Revamp of Catalogs Screen - Introducing In-Game Store - Many additions, fixes, and balancing changes ##### Invasion Game Mode Murkoff is proud to unveil a permanent new Experimental Therapy in The Outlast Trials: **INVASION**. Invasion invites Reagents to take the role of Imposters, donning a mask to imitate a fellow Reagent, and wielding a knife to increase and then end their suffering. Show us your commitment to the therapy; show us your loyalty to the Murkoff Corporation. Whichever end of the knife you're on, we're all getting better together. This Special Therapy pits groups of Reagents against their most ruthless threat yet: player-controlled Imposters. As with any Murkoff therapy, INVASION is in constant evolution, and your feedback will help shape its evolution. ##### **Roles** ## **REAGENT**: Complete Trials with a risk of being invaded by player Imposters. All your items and Rigs work against the Imposters. Your goal is to survive and complete the Trial. **IMPOSTER**: Invade Trials as an Imposter and kill the Reagents. You perfectly mimic the appearance of a Reagent present in the Trial. Your goal is to kill all the Reagents before they finish the Trial. ##### **Access to Invasion** Invasion will be a new permanent Game Mode that is available through the Terminal in the Sleep Room. You will be able to choose the role of a Reagent or Imposter, or select the “RANDOM” option and receive bonus XP. After each match, you and your team will be placed into a new Trial with your roles swapped. The Invasion Experimental Therapy supports solo play and groups of 2, 3, or 4 players. ##### **Imposter Deployment** - Not all Imposters are deployed at once. Some hunt while others monitor via surveillance cameras. - The number of deployed Imposters scales with the number of Reagents in the Trial: - 1–2 Reagents = 1 Imposter deployed at once. - 3–4 Reagents = 2 Imposters deployed at once. - When an Imposter returns to the Insertion Gate or dies, the next one in line is deployed. - The rotation continues until all Imposters run out of lives, the Trial ends or all Reagents are killed. - While Imposters wait for their turn to invade, they can use the surveillance cameras to gather intel for their team. - Imposters have 3 lives each and are susceptible to Reagents attacks, Prime Assets and certain Ex-Pops. - Imposters deployment periods are timed, make sure you get back to an Insertion Gate or you will be shocked to death. - All Imposters are unleashed once Reagents complete the final objective and must escape the Trial. - Imposters hear the voice of their victim when they kill. (It can be turned off in the Pause menu) **Progression & Difficulty** - Invasion difficulty scales as you play: Early runs will feature fewer Trial options and no Ex-Pop Specialists. As you progress and play more of the Invasion Experimental Therapy, more Trials will be added to the pool and Ex-Pop Specialists will be deployed. The scaling is: - 1-10 matches: Minimal pool of Trials (~3). - 11-50 matches: Limited pool of Trials _[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/1304930/view/632317708781750291]_