Moonfall: Protocol

Moonfall Protocol is a co-op survival horror for 1–4 players. Explore the moon, gather evidence of its secrets, and survive a dream that begins to shift into a nightmare filled with hostile creatures and chaos.

At a glance

• Platform: Windows.
• Genres: Action, Adventure, Indie.
• Release date: Sep 30, 2025.
• Steam user reviews: 4 user reviews (50% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

CDKeyCheap does not sell keys. We track and display prices; every purchase happens on the store you click through to.