Hollow Knight: Silksong Sea of Sorrow: Release Date, Platforms, and Everything We Know (2026)

Updated July 2026. Sea of Sorrow is a free nautical expansion for Hollow Knight: Silksong, confirmed for 2026 by developer Team Cherry. It adds a new area, new bosses and a new storyline thread to Silksong at no charge to existing owners. A specific release date has not been set as of this writing.

What Is Sea of Sorrow?

Sea of Sorrow is a free downloadable expansion for Hollow Knight: Silksong, the long-awaited sequel from Australian developer Team Cherry. The studio announced the expansion in December 2025 via their holiday blog post, revealing that all Silksong owners would receive the additional content at no extra cost when it launches in 2026.

The expansion introduces Pharloom Bay, a nautical area set apart from the main game's regions. Team Cherry described it as bringing new bosses, new environmental challenges and a nautical mystery narrative that expands on Silksong's existing storyline. The tone and setting represent a deliberate contrast with the game's primary underground world, moving the action to a coastal and maritime environment.

At the same time as the Sea of Sorrow announcement, Team Cherry confirmed a Nintendo Switch 2 edition of the original Hollow Knight, also targeted for 2026.

Sea of Sorrow Release Date

Team Cherry has not announced a specific launch date for Sea of Sorrow. The studio confirmed only that the expansion will arrive in 2026. Given that a physical edition of Hollow Knight: Silksong itself is scheduled for October 16, 2026, it is possible that Team Cherry will time the Sea of Sorrow launch around or ahead of that physical release, though the studio has not confirmed this.

This post will be updated as soon as a specific date is announced. The best way to track updates from Team Cherry directly is through the Hollow Knight: Silksong Steam page, where the studio posts news updates.

Platforms

Sea of Sorrow will be available across all platforms where Hollow Knight: Silksong is sold. That includes:

• PC via Steam
• Xbox Series X and Xbox Series S (available through Xbox Game Pass)
• PlayStation 5 and PlayStation 4
• Nintendo Switch and Nintendo Switch 2

Hollow Knight: Silksong launched simultaneously on Xbox Game Pass at release, meaning Game Pass subscribers on Xbox and PC received access to the base game included in their subscription.

What We Know About the Content

Pharloom Bay

The expansion's central location is Pharloom Bay, a nautical region distinct from the cliffs, towers and underground environments of the main Silksong campaign. Team Cherry has described it as a full new area rather than a minor zone, with its own set of enemy types, environmental hazards and atmospheric design. Nautical and maritime imagery are central to the aesthetic, in contrast to the moss-covered stone and insect architecture of the main game.

New Bosses

Team Cherry confirmed Sea of Sorrow includes new boss encounters. Specific bosses have not been revealed or named by the studio ahead of release. Given Team Cherry's reputation from the original Hollow Knight, which featured some of the most praised independent game boss designs of its era, the new encounters are among the most anticipated elements of the expansion.

A Nautical Mystery

The studio described a narrative thread tied to a "nautical mystery," implying Sea of Sorrow has its own story layer rather than serving as a simple arena or challenge addition. The connection of this mystery to Silksong's main plot has not been detailed.

Free for All Owners

Team Cherry confirmed Sea of Sorrow carries no additional purchase price. All players who own Hollow Knight: Silksong on any platform will receive the expansion as a free update. This continues Team Cherry's approach from the original Hollow Knight, for which the studio released several major free content expansions including Grimm Troupe, Lifeblood, Godmaster and Hidden Dreams.

Hollow Knight: Silksong Physical Release

A physical edition of Hollow Knight: Silksong is confirmed for October 16, 2026, across PS5, Xbox Series X and Nintendo Switch. The physical release coincides with a separate physical edition of the original Hollow Knight for Nintendo Switch 2 and PS5, giving new players a route into both games in disc or cartridge form.

What's Next

Team Cherry has not indicated any content beyond Sea of Sorrow for Silksong. The studio's history suggests they will post development updates on Steam and their official blog as the expansion nears completion. A release date announcement is expected ahead of the expansion's launch window. Watch this space for updates as they are confirmed.

For more upcoming game coverage, see our tracker on GTA 6 Trailer 3: everything we know. If you're building a gaming setup to play Silksong and Sea of Sorrow on PC, our guide to the best gaming keyboards in 2026 covers every budget and layout.

Frequently Asked Questions

What is Hollow Knight: Silksong Sea of Sorrow?

Sea of Sorrow is a free post-launch expansion for Hollow Knight: Silksong, announced by Team Cherry in December 2025. It adds a nautical area called Pharloom Bay, new bosses and additional storyline content at no charge to all Silksong owners.

When does Sea of Sorrow release?

Team Cherry has confirmed Sea of Sorrow launches in 2026. As of July 2026, a specific date has not been announced. This page will be updated when a date is confirmed.

Is Sea of Sorrow free?

Yes. Sea of Sorrow is free for all owners of Hollow Knight: Silksong across every platform. No separate purchase is needed.

What platforms is Sea of Sorrow on?

Sea of Sorrow will be available on all platforms where Hollow Knight: Silksong is available: PC (Steam), Xbox (including Game Pass), PlayStation 5, PlayStation 4, Nintendo Switch and Nintendo Switch 2.

When did Hollow Knight: Silksong come out?

Hollow Knight: Silksong launched in 2026 on PC, Xbox, PlayStation and Nintendo Switch. A physical edition is scheduled for October 16, 2026. Xbox Game Pass subscribers had access to the game at launch through their subscription.