diff --git a/app/static/external-apps/README.md b/app/static/external-apps/README.md
index 3c69ac0..654bac7 100644
--- a/app/static/external-apps/README.md
+++ b/app/static/external-apps/README.md
@@ -7,3 +7,5 @@ which can be used in an i-frame. The files in this folder have been gitignored b
 
 - GBA Emulator
   - Set the folder name to: `gba-emulator`
+- Doom
+  - Set the folder name to `jsdoom`