diff --git a/journal/2021-04-11.md b/journal/2021-04-11.md
index 7fef2c4f0..34f342aef 100644
--- a/journal/2021-04-11.md
+++ b/journal/2021-04-11.md
@@ -5,7 +5,7 @@
   - [[transitive go]]
   - write about [[run]], perhaps needed for [[js subodes]] or [[py subnodes]]
 - My mum told me about a movie in which cancelled [[kevin spacey]] plays a cat.
-- [[push]]
-  - [[flancia]] is a [[world simulation]] [[game]].
+- [[push]] [[game]]
+  - [[flancia]] is a [[world building]] [[game]].
  
 https://twitter.com/flancian/status/1381236451397021698
\ No newline at end of file
diff --git a/journal/world-building.md b/journal/world-building.md
new file mode 100644
index 000000000..ead48172e
--- /dev/null
+++ b/journal/world-building.md
@@ -0,0 +1,4 @@
+# world building
+
+- [[pull]] [[game]]
+