Grounded 2 Rot and Ruin Update Adds Centipede Boss, Termites

Obsidian Entertainment has detailed the Rot and Ruin Update for Grounded 2, the next major content drop for the shrunken-survival game. Announced on Xbox Wire by Obsidian's Shyla Schofield, Senior Communications Manager, the update adds a new area, the long-requested Centipede boss, a bigger Buggy, and a way to paint your base, with a release window set for "this fall."

It's the kind of update Grounded 2's early access audience has been asking for since the sequel launched: new places to explore in Brookhollow Park, a returning enemy type from the original game reworked for the sequel's bigger scale, and systems that let players keep investing in gear they already have instead of starting over every patch.

01What's Coming in the Rot and Ruin Update

Rot and Ruin centers on the Woodpile, a new adventure zone built from towering stacked structures and winding passages. It's also where the Termites make their comeback, including Workers, Soldiers, and the Termite King, alongside new O.G.R.R. variants. Obsidian says these Termites behave differently from their first appearance in the original Grounded, with new attacks to learn and counter, so players who remember the first game's colony fights shouldn't expect an identical rematch.

02The Centipede Boss and the Potato Beetle Buggy

The headline addition is the Centipede, a new boss fight that Obsidian describes as long-requested by the community. Boss encounters in Grounded 2 have so far been one of the clearer measures of progress through early access, so a new one carries real weight for players who've already cleared the current roster.

Players taking the Centipede on will want backup, and that's where the Potato Beetle Buggy comes in. It's larger than the existing Ladybug Buggy and built for close-range combat, firing a spread of projectiles at anything in front of it and carrying a Healing Roar ability to keep its rider topped up. Outside of combat, the Potato Beetle can haul resources and even contribute materials to blueprints while you build, making it as useful on a construction site as it is in a fight. Buggies have been one of Grounded 2's signature additions over the original game, and a second one built around sustain rather than pure damage gives players another reason to specialize their setups.

03A New Way to Paint Your Base

Rot and Ruin also introduces basic customization through paint. Players can craft paint and apply it with a new paintball gun called the Splotcher, which can recolor walls, floors, roofs, stairs, doors, and other structures. It's a straightforward addition, but one that gives bases in Brookhollow Park a lot more personality than the default building materials allow.

04Bismuth and the Yoking Press

A new resource, Bismuth, ties into Raw Science found beneath the Park. It's used at a new crafting station called the Yoking Press, which lets players upgrade existing weapons and armor to higher Tiers rather than replacing them outright. That's a meaningful shift for a survival game built around constant gear churn — instead of scrapping a favorite weapon the moment a better version drops, the Yoking Press gives players a reason to carry gear forward.

Combined with the update's other additions — new SCA.B Themes, collectible miniatures, and new stations scattered through the Park — Rot and Ruin leans into giving long-term players more to chase without resetting their progress.

05Release Window and Platforms

Grounded 2 is currently available in Xbox Game Preview on Xbox Series X|S, Xbox on PC, and Xbox Game Pass, as well as through Steam Early Access and on PlayStation 5. Obsidian has not given Rot and Ruin an exact release date beyond "this fall," and the studio has set 2027 as the target for the game's full 1.0 release. The early access build currently lists at $29.99 on Steam.

06Why It Matters

Grounded 2 has spent its early access run steadily rebuilding the toolkit fans liked from the original game while adding Buggies and a much larger map to explore. Rot and Ruin is the clearest sign yet that Obsidian is working through a backlog of returning content — Termites first appeared in the original Grounded — while still introducing new systems like the Yoking Press ahead of a full launch still more than a year away.

With 1.0 not due until 2027, updates like this one are also how Obsidian keeps early access players engaged through a long development cycle. A new boss, a new Buggy, and a new way to invest in gear are exactly the kind of additions that give returning players a reason to boot the game back up rather than wait for the finished release.