What Was the Mortal Shell II Open Beta?

What the open beta was

The Mortal Shell II open beta (also written as Mortal Shell 2) was a free, limited-time preview of the game's opening hours. The official Steam description says it "grants access to the opening hours of the full game, from the Prologue into the first explorable region."

On Steam the item was listed as a demo (type=demo), and the official short description reads: "Play the opening three hours of the game in this limited Open Beta, with select progress carrying forward into the full release."

It was also a feedback exercise: the message shown at the start of the beta described it as a work in progress, noting possible bugs, performance issues, and unfinished content, and asked players to report anything great, confusing, frustrating, or broken.

Dates and platforms

The Steam date comes from the Steam store page (release date "5 Jun, 2026") and the official announcement "Now Available: The Mortal Shell II Beta" (June 5, 2026). The console date comes from the PlayStation Store (Release 7/31/2026), the Xbox store page ("31 Jul 2026"), and the official news post "Mortal Shell 2's Open Beta Starts Today" (July 31, 2026).

The fan wiki Fextralife lists the Steam beta as "released on June 6, 2026." The material treats this as a timezone artifact — June 5 in the US is June 6 in some regions — with the official June 5, 2026 date used here.

What was included

• The Prologue and the first explorable region of the open world (official Steam and Xbox descriptions; official June 5 announcement).
• Roughly three hours of content (official Steam short description; Fextralife).
• Two playable Shells in the beta: Tiel, the Acolyte, and the starting Shell Harros (Fextralife).
• Tiel is one of eight playable Shells in the full game (PlayStation Store).
• A preview of the game's open-world exploration (Fextralife).

Rewards: the Flayed Harbinger

Playing the open beta earned The Flayed Harbinger, an exclusive cosmetic reward. The Xbox store page describes it as "an exclusive cosmetic reward available to claim in the full game at launch," and Fextralife lists it as a reward for completing the open beta.

This reward was earned by players who took part in the beta, which has ended. There is no beta to join or download; players who earned the cosmetic claim it in the full game.

Progress carry-over

The official Steam description says "select progress" carried forward into the full release. The specific carry-over items are the Flayed Harbinger cosmetic and the prologue skip:

• Players who progressed beyond Marrow Keep in the beta could skip the Prologue when starting the full version (Fextralife).
• Other gameplay progression did not transfer: Shells discovered, equipped weapons, obtained currency, acquired collectibles, and other items (Fextralife).

The exact scope of "select progress" is confirmed by the official news as the Flayed Harbinger reward and the prologue skip. The detail that most other progression did not transfer comes from a fan wiki and is marked medium confidence.

Current status

The Mortal Shell II open beta is over. The full game released on August 20, 2026 and is the current version of the game.

The beta covered only the opening hours. The full release is much larger, so beta-era routes and guides are not a reliable map for the full game.