Prepared for: Interested Stakeholders Date: 14 April 2026 1. Executive Summary The “Fallen Doll” activation‑key system is the primary method by which the developer (Astra Interactive) controls access to its flagship product, the horror‑survival game Fallen Doll (released 2024). The system combines a cryptographically‑signed license key with an online verification service to prevent unauthorized distribution while preserving a smooth user experience.

Key findings:

| Area | Observation | Implication | |------|-------------|-------------| | | Hybrid offline/online validation; keys are 25‑character alphanumeric strings (e.g., FD‑XXXX‑XXXX‑XXXX‑XXXXX ). | Allows play offline after one successful verification, reducing friction for users with intermittent connectivity. | | Security | Uses RSA‑2048 signatures + SHA‑256 hash; server‑side revocation list refreshed every 12 h. | Strong resistance to key‑generation attacks, but reliance on a single endpoint (api.fallendoll.com) creates a potential DoS vector. | | Distribution | Keys sold via official storefront, partner retailers, and limited‑time promotional bundles (e.g., Steam, Epic, and the developer’s own web store). | Centralized control makes revenue tracking easy, but third‑party resellers occasionally leak keys. | | Compliance | End‑User License Agreement (EULA) explicitly prohibits sharing or resale of activation keys. | Enforces legal protection; violators risk account bans and potential civil action. | | User Experience | One‑click activation in the launcher; automatic re‑validation every 30 days for accounts that remain online. | Minimal friction for legitimate users; occasional false‑positives reported when firewalls block the validation request. |

Addressing the modest weaknesses identified—particularly server redundancy, offline token longevity, and the gradual elimination of physical key cards—will further harden the ecosystem against emerging threats and improve the overall player experience. Implementing the recommendations above should keep “Fallen Doll” compliant with best‑in‑class DRM standards for the next several years. Prepared by: Senior DRM Analyst – Gaming Security Division Astra Interactive Consulting