Behaviour Interactive will be opening up a beta on Steam for Exterminauts on Nov. 12, 2026. It'll let folks get a jump on the studio's first big original IP in quite some time. The Exterminauts beta lasts for a week. It will close up on Nov. 18 at 5:59 PM PT.
Beta test runs from Nov. 12 to 18 with cross-platform support
Exterminauts is a third-person shooter focused on three-player squads on the planet TIAN. You play as blue-collar exterminators/repairmen. Behaviour Interactive also allows for solo and duo play in addition to the core three-player format.
Exterminauts will debut as a premium live-service game with cross play and save options. Behaviour Interactive's aiming to do twelve-week seasons for content. It's worth noting that Creative Director Vincent Regimbald has confirmed that the final game has zero generative AI assets in it.
What sets Exterminauts apart from a game like Helldivers 2 is deeper loadout customization. It also focuses on odd-number squads to really push for certain tactical roles. Behaviour Interactive says this is their most ambitious original IP since Dead by Daylight.
Does the beta support Proton or is there a proprietary anti-cheat locking it to Windows only?
The fact sheet lists PC, Xbox, and PlayStation. No mention of Linux support or specific anti-cheat details yet, so assume Windows only for now.