diff --git a/src/main.rs b/src/main.rs
index 4bc01e1..ae4b9aa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -86,6 +86,7 @@ struct Room {
     id: String,
     palette: String, /// id
     name: Option<String>,
+    tiles: Vec<String>, /// tile ids
     items: HashMap<Position, Item>,
     exits: HashMap<Position, Exit>,
     endings: HashMap<Position, Ending>,