diff --git a/README.md b/README.md
index 4db68a0..582679e 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ some more practical uses would be things like:
 * replace game avatar with helper functions to get and set the sprite with an ID of A
 * implement PartialEq for tiles etc. for the sake of checking for duplicate tiles?
 * dedupe functions for tiles, sprites, etc.
+* "get all tiles for room" function
 
 ### tidy up