Crimsooon Sun

No choices but deduction. No game over. No multiple endings. A mystery "novel" adventure you can play with the same focus as reading a detective novel. Defy the sun with twenty-six bullets—even if the revolution of the heavenly spheres cannot be stopped.

At a glance

• Platform: Windows, Linux.
• Genres: Adventure, Casual.
• Release date: Jul 16, 2026.
• Steam user reviews: 6 user reviews (83% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

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.

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