diff --git a/TODO.md b/TODO.md
index af2abcd..07221c4 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,3 +1,7 @@
+- save/restore state in local storage
+  - need to save all not-computed resource properties that can change
+    - resource.value
+    - resource.cost
 - second click functionality (for selling)
 - more infrastructure
   - more follower storage space