Obsidian Entertainment is pulling Pillars of Eternity II: Deadfire, Pentiment, and more from Steam and other digital storefronts on Friday after Unity, the game engine used to make them, was revealed to have a years-old security flaw. The company behind it is now urging developers to update their games to avoid any issues.
“A security vulnerability was identified that affects games and applications built on Unity versions 2017.1 and later for Android, Windows, Linux, and macOS operating systems,” former Xbox mascot Larry “Major Nelson” Hryb wrote on the Unity forum earlier today. “There is no evidence of any exploitation of the vulnerability, nor has there been any impact on users or customers.”
Hryb added that the company “proactively provided fixes that address the vulnerability, and they are already available to all developers” and is encouraging all of them to update their products as soon as possible. Windows, Steam, and others already implemented fixes at the platform level today. Now some studios are taking their games down while they get them patched. One of them is Grounded 2 maker Obsidian Entertainment.
A security vulnerability affecting our games that use Unity has recently been identified.
As a precaution and to keep you safe, we have temporarily removed the following titles and products from digital storefronts while we implement the necessary updates to address the issue:…
— Obsidian (@Obsidian) October 3, 2025
“As a precaution and to keep you safe, we have temporarily removed the following titles and products from digital storefronts while we implement the necessary updates to address the issue,” it wrote on X. In addition to Pillars of Eternity II: Deadfire and Pentiment, it also includes certain versions of Grounded 2 and Avowed which include artbooks made with Unity.
“We apologize for any inconvenience this may cause,” the studio wrote. “Our team is working on a fix and will restore these games as soon as possible. We will provide additional information once they are available again. We also encourage players who have already downloaded these games to update them as soon as a patch becomes available.”
Hey everyone,
We’ve rolled out a quick patch to address the Unity security vulnerability.
Your saves and gameplay are safe! Just hit update and you’re covered. And if you haven’t joined yet, No Rest for the Wicked is 30% off on Steam right now. This is the perfect moment to…
— No Rest for the Wicked (@wickedgame) October 3, 2025
Other developers have also started rolling out updates, some without temporarily removing their games from digital store shelves. Pillars of Eternity II: Deadfire and Pentiment, both great games, were currently discounted for Steam’s autumn sale. Hopefully, they’re back soon.