diff --git a/one-sentence-game-ideas/contents.md b/one-sentence-game-ideas/contents.md
index a5225d7..e10fbb6 100644
--- a/one-sentence-game-ideas/contents.md
+++ b/one-sentence-game-ideas/contents.md
@@ -2,6 +2,7 @@
 title: One-sentence game ideas
 credits: XPUB
 contents:
+    -PLACEHOLDER COVER
     - You are in an empty room with 13 doors that are portals to 13 different worlds.
     - |-
         5 min