Is Mortal Shell 2 on Game Pass?

Do not assume Mortal Shell II is included with Game Pass. The Xbox store page confirms the Xbox Series release, but subscription inclusion is a live entitlement that can change by region and date. ^[xbox]

Open the store page while signed in. If it says “Included with Game Pass,” your current plan and region qualify; if it only shows a purchase price, buy-to-own is the available option.