Nightmare 317 Custom RSPS guide & new player hub
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Nightmare 317 / Download

Download & Install

The Nightmare 317 launcher will be available at launch. Check back June 1st, 2026.

Not live yet

Nightmare 317 has not launched yet, so the download is currently unavailable. The steps below will be used once the launcher goes live.

Install steps

  1. Download the launcher: Check back June 1st, 2016!
  2. If Java is not already installed, install Java 11 for Windows before opening the launcher.
  3. If .jar files open with WinRAR, 7-Zip, or do nothing when double-clicked, run Jarfix to repair the Windows .jar association.
  4. Open the launcher after Java is installed and let Nightmare finish updating automatically.

Setup downloads

Use these if the launcher will not open cleanly on a fresh Windows install.

Java 11 Jarfix

If the launcher does not start

Most Windows launch issues come from missing Java or broken .jar associations. Install Java 11 first, then run Jarfix, then try the launcher again.