To celebrate the event, Slitherine has prepared a treasure chest full of awesome content: the first narrative campaign DLC, free units for all Warhammer 40,000: Battlesector fans, a brand-new DLC and a free-to-keep offer for Warhammer 40,000: Gladius
The Narrative Campaign Strikes Back. As highly requested by fans, Slitherine and developer FutuRats have prepared a special surprise for Skulls Festival: a brand-new narrative campaign for Warhammer 40,000: Battlesector, featuring the Sisters of Battle waging a no-holds-barred fight against the merciless Orks.
For this year’s Skulls occasion, Slitherine is also releasing a new unit pack for Warhammer 40,000: Gladius including the long awaited Aeldari Craftworld Vyper and the relentless Rubric Marine for the Chaos Space Marines.
During the event, there will also be discounts for both titles (on PC and consoles), and for a limited period, players will be able to add Warhammer 40,000: Gladius to their Steam libraries for free.
For this year’s Skulls occasion, Slitherine is also releasing a new unit pack for Warhammer 40,000: Gladius including the long awaited Aeldari Craftworld Vyper and the relentless Rubric Marine for the Chaos Space Marines.
During the event, there will also be discounts for both titles (on PC and consoles), and for a limited period, players will be able to add Warhammer 40,000: Gladius to their Steam libraries for free.
Warhammer 40,000: Battlesector
To celebrate the game and the enthusiasm of the community, Warhammer 40,000: Battlesector’s first campaign DLC is released during this year’s Skulls Festival.
Skulls 2025 Slitherine Showcase
Deeds of the Fallen contains twelve missions, where fans can play as the Sisters of Battle through a story-driven campaign against the Orks. The Adepta Sororitas will receive three new units, Imagifier, Castigator Battle Tank, Zephyrim - to fight in the name of the Emperor.
This is a milestone for this beloved Warhammer 40,000 game, as the community has long asked to play a narrative campaign with Warhammer 40,000: Battlesector gameplay and dynamics.
The surprises don’t end there: Warhammer 40,000: Battlesector fans are treated to a free major update that not only adds a new game mode, the Crusade Mode, but two free units as well.
The Crusade Mode is a new game feature that will challenge players to start with a basic army and fight their way through hordes of enemies, to earn the opportunity to expand both their forces and firepower. The mode also adds a new way to level up the troops, with a new experience system based on the ferocity of the battle, with a variety of ways to upgrade entire classes of troops.
The two free units are the Dominions for the Adepta Sororitas faction and the Orks Boyz with Choppas for the Orks.
Warhammer 40,000: Battlesector is giving fans everything they asked for to enjoy the game, and more: the base game will be on sale at a 70% discount, while the DLCs will have discounts of up to 40% for the entire week of the Skulls Festival.
Warhammer 40,000: Gladius - Relics of War
Even Warhammer 40,000: Gladius fans will not be disappointed, as Slitherine and Proxy Studios are releasing the Onslaught Pack, which includes exciting new units such as:
During the Warhammer Skulls event, the Warhammer 40,000: Gladius franchise will be discounted by up to 50%. Available only on PC, the game will also be free to keep for a limited period on Steam, from May 22nd to 29th.
- Norn Emissary - Tyranids
- Squighog Boy - Orks
- Sicarian Ruststalkers - Adeptus Mechanicus
- Attilan Rough Rider - Astra Militarum
- Rubric Marine - Chaos Space Marines
- Vyper - Aeldari
- Mandrake - Drukhari
- Canoptek Reanimator - Necrons
During the Warhammer Skulls event, the Warhammer 40,000: Gladius franchise will be discounted by up to 50%. Available only on PC, the game will also be free to keep for a limited period on Steam, from May 22nd to 29th.
Useful links
Warhammer 40,000: Battlesector - Deeds of the Fallen Steam Page
https://store.steampowered.com/app/3577600/
Warhammer_40000_Battlesector__Deeds_of_the_Fallen
Warhammer 40,000: Battlesector Steam Page
https://store.steampowered.com/app/1295500/
Warhammer_40000_Battlesector/
Warhammer 40,000: Gladius - Onslaught Pack Steam Page
https://store.steampowered.com/app/3743110/
Warhammer_40000_Gladius__Onslaught_Pack/
Warhammer 40,000: Gladius Steam Page
https://store.steampowered.com/app/489630/Warhammer_40000
_Gladius__Relics_of_War/
Warhammer Skulls 2025
About Slitherine
The Slitherine Group is the world’s leading producer and publisher of digital strategy and wargames. Under the Slitherine (www.slitherine.com) and Matrix Games (www.matrixgames.com) brands it has published literally hundreds of games, with many award-winning titles in its portfolio and spanning all digital platforms, from home consoles to PC. Slitherine also works with a wide array of key licensing partners, such as NBC Universal®, Games Workshop®, Sony Pictures, BBC, Osprey, and many others.
For more information contact Slitherine press office – press@slitherine.co.uk
About Games Workshop®
Games Workshop® Group PLC (LSE:GAW.L), based in Nottingham, UK, produces the best fantasy miniatures in the world. Games Workshop designs, manufactures, retails, and distributes its range of Warhammer®: Age of Sigmar® and Warhammer® 40,000® games, miniatures, novels, and model kits through more than 553 of its own stores (branded Games Workshop® or Warhammer®), the www.games-workshop.com web store and independent retail channels in more than 50 countries worldwide. More information about Games Workshop and its other, related, brands and product ranges (including our publishing division ‘Black Library’ and our special resin miniatures studio ‘Forge World’) can be found at www.games-workshop.com.
Warhammer 40,000: Battlesector © Games Workshop Limited 2025. Warhammer 40,000: Battlesector, GW, Games Workshop, Space Marine, 40K, Warhammer, Warhammer 40,000, 40,000, the 'Aquila' Double-headed Eagle logo, and all associated logos, illustrations, image, names, creatures, races, vehicles, locations, weapons, characters, and the distinctive likeness thereof, are either ® or TM, and/or © Games Workshop Limited, variably registered around the world, and used under license. Developed and published by Slitherine Ltd. All rights reserved to their respective owners.
Warhammer 40,000: Gladius - Relics of War © Copyright Games Workshop Limited 2025. Gladius - Relics of War, the Gladius - Relics of War logo, GW, Games Workshop, Space Marine, 40K, Warhammer, Warhammer 40,000, 40,000, the ‘Aquila’ Double-headed Eagle logo, and all associated logos, illustrations, images, names, creatures, races, vehicles, locations, weapons, characters, and the distinctive likeness thereof, are either ® or TM, and/or © Games Workshop Limited, variably registered around the world, and used under licence. Published by Slitherine Ltd. Developed by Proxy Studios. All rights reserved to their respective owners.
Warhammer 40,000: Gladius - Relics of War © Copyright Games Workshop Limited 2025. Gladius - Relics of War, the Gladius - Relics of War logo, GW, Games Workshop, Space Marine, 40K, Warhammer, Warhammer 40,000, 40,000, the ‘Aquila’ Double-headed Eagle logo, and all associated logos, illustrations, images, names, creatures, races, vehicles, locations, weapons, characters, and the distinctive likeness thereof, are either ® or TM, and/or © Games Workshop Limited, variably registered around the world, and used under licence. Published by Slitherine Ltd. Developed by Proxy Studios. All rights reserved to their respective owners.