
- Developer
- 10Tons
- Publisher
- 10tons Ltd.
- Genre
- Action, Action-RPG, Adventure, RPG
- Game modes
- Couch-Koop, Koop, Singleplayer
- Game series
- DYSMANTLE
- Steam user reviews
- 64 % positive · 138 reviews
- At Steam
- View store page
On this page 15 sections
What is DYSMANTLE: Underworld?
DYSMANTLE: Underworld is a paid expansion to the post-apocalyptic action RPG DYSMANTLE. It leads into a separate underground game world with new enemies, equipment and tasks. The additional abilities also help when exploring the original island.
The base game is required. Underworld is not a standalone remake and does not replace the main story.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- Steam – Produktinformationen store.steampowered.com
Release
Underworld first released on PC via Steam on Aug 24, 2022. The console versions and the expansion for mobile versions of DYSMANTLE followed in November 2022. Each release concerns the add-on pack for the main game, which has already been released.
-
PC
Released on Aug 24, 2022.
Source
- 10tons – Underworld 10tons.com
- Steam – Underworld store.steampowered.com
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PS4, PS5, Xbox One, Xbox Series, Switch, iOS, Android
Released in November 2022.
Source
- Xbox – Underworld xbox.com
- 10tons – Underworld 10tons.com
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- Steam – Produktinformationen store.steampowered.com
- Xbox – Produktinformationen xbox.com
Platforms
Underworld is available for Windows PC, PlayStation 4, PlayStation 5, Xbox One, Xbox Series X|S, Nintendo Switch, iOS and Android. On mobile devices, the add-on content is offered within the main game.
A Nintendo Switch 2 version does not become a standalone release through the backward compatibility of the Switch version. The PC version also needs a matching installation of DYSMANTLE.
Updated 09.11.2026
Sources
- Steam – Produktinformationen store.steampowered.com
- Xbox – Produktinformationen xbox.com
- 10tons – Offizielle Angaben 10tons.com
Gameplay
The expansion moves part of the exploration from the surface into a new, extensive underworld. Branching paths, hostile creatures, old buildings and mysterious facilities lead to additional quests.
The familiar mix of combat, gathering and crafting remains. Some unlocked tools can also be used outside the Underworld afterwards.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- Steam – Produktinformationen store.steampowered.com
Trailer
DLC and expansions
Belongs to DYSMANTLE
Underworld adds an additional map, new tasks and enemies, plus recipes, skills and building options. The DLC thus expands exploration as well as equipment and base building.
If you want to explore more regions afterwards, Doomsday and Pets & Dungeons are two separate expansions for DYSMANTLE. These are not part of Underworld.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- 10tons – Offizielle Angaben 10tons.com
System requirements
The Windows version requires a 64-bit processor, a graphics card with Shader Model 3.0 or higher, and DirectX 11. For the DLC files, Steam lists 768 MB of free storage. The main game DYSMANTLE must also be installed.
The current Steam client supports Windows 10 and newer. The older Windows versions in the original product description are therefore no indication of current Steam support.
The details apply to Windows-PC.
Minimum
- Operating system
- Windows 10 or newer (Steam)
- Processor
- 64-bit processor
- Graphics
- Shader Model 3.0 or higher
- DirectX
- Version 11
- Storage space
- 768 MB for the add-on
Editorial details
Updated 09.11.2026
Sources
- Steam – Produktinformationen store.steampowered.com
How Underworld begins
The additional content unlocks after your character passes the gate from the first area of the main game. At the next rest at a campfire, a new main quest appears that opens the way into the Underworld.
A completely new save game is not needed for this. The DLC inserts the quest into your existing progress.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- Steam – Produktinformationen store.steampowered.com
Ivory Mountain and the past
In the Underworld, the events of the 1930s and the mysterious Ivory Mountain Company take center stage. Abandoned facilities and new tasks provide clues about the history of this place.
The expansion combines the additional environment with its own puzzle and quest line, rather than just offering new combat arenas.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- 10tons – Offizielle Angaben 10tons.com
New weapons and enemies
With the crossbow and a sawn-off shotgun, Underworld expands the arsenal with new ranged weapons. Unknown creatures also wait, creating combat situations different from those on the main island.
New recipes and skills add to equipment crafting. The pinstripe suit is also among the additional clothing items.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- 10tons – Offizielle Angaben 10tons.com
Fast travel and farming
Underworld unlocks fast travel between campfires. This cuts down on long walks back when exploring and gathering materials.
The Mana seed bag makes it easier to manage larger planting areas. Both new features are not limited to a single underground quest.
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- 10tons – Offizielle Angaben 10tons.com
Play together
The PC version supports local split-screen co-op. Steam Remote Play Together can also share this local play over the internet.
Underworld uses the multiplayer features of the main game. As a result, the DLC has no separate online server mode.
Updated 09.11.2026
Sources
- Steam – Produktinformationen store.steampowered.com
- Steam – Produktinformationen store.steampowered.com
Language and controls
On Steam, interface and subtitles are available in German, English, French, Spanish, Italian and Japanese, among others. English voice-over is listed.
The PC version supports controllers. Language and input options may differ between stores.
Updated 09.11.2026
Sources
- Steam – Produktinformationen store.steampowered.com
More from 10Tons
Game series
The Finnish studio 10tons developed and published Underworld. The expansion belongs to DYSMANTLE, whose game world revolves around taking apart objects, resources and lasting progress.
10tons later also released the expansions Doomsday and Pets & Dungeons. With DYSPLACED, the studio developed another survival adventure with its own fantasy game world.
More from DYSMANTLE
Updated 09.11.2026
Sources
- 10tons – Offizielle Angaben 10tons.com
- 10tons – Offizielle Angaben 10tons.com







