Here’s a short, clear guide to download and install Elden Ring: Nightreign + official store links.
PC (Steam)

- Open Steam → sign in.
- Search “ELDEN RING NIGHTREIGN” → Purchase/Install. (Steam Store)
- Launch from your Library (first run will finish any setup).
Steam link: (store page). (Steam Store)
PlayStation (PS5/PS4)

- Open PlayStation Store → search Elden Ring Nightreign.
- Buy/Download → install → play. (PlayStation Store)
PS Store link (PS4/PS5 concept page): (store page). (PlayStation Store)
Xbox (Series X|S / One)

- Open Microsoft Store → search Elden Ring Nightreign.
- Buy/Install → launch from My games & apps. (Xbox.com)
Xbox Store link (Standard edition): (store page). (Xbox.com)
Official info / publisher page

- Bandai Namco (Official site): overview, trailers, platforms. (Bandai Namco Europe)
Notes
• Nightreign is a standalone Elden Ring adventure (not a DLC), available on PC/PS/Xbox. (Bandai Namco Europe)
• For the broadest updates (patches, features), check the official site or your store page. (Bandai Namco Europe)