diff --git a/src/game.rs b/src/game.rs
index 138a65f..875d847 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -1,17 +1,4 @@
-use crate::{
-    Avatar,
-    Dialogue,
-    Ending,
-    Font,
-    Item,
-    Palette,
-    Room,
-    Sprite,
-    TextDirection,
-    Tile,
-    Variable,
-    optional_data_line
-};
+use crate::{Avatar, Dialogue, Ending, Font, Item, Palette, Room, Sprite, TextDirection, Tile, Variable, optional_data_line, ToBase36};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Version {
@@ -186,6 +173,24 @@ impl ToString for Game {
             segments.push(tile.to_string());
         }
 
+        // for some reason the sprites with numeric IDs go first,
+        // then SPR A (avatar), then all the non-numeric IDs
+        fn is_string_numeric(str: String) -> bool {
+            for c in str.chars() {
+                if ! c.is_numeric() {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        for sprite in &self.sprites {
+            if is_string_numeric(sprite.id.to_base36()) {
+                segments.push(sprite.to_string());
+            }
+        }
+
         segments.push(self.avatar.to_string());
 
         for sprite in &self.sprites {
@@ -343,15 +348,6 @@ fn test_add_tile() {
 #[test]
 fn test_bitsy_omnibus() {
     let acceptable_failures: Vec<String> = vec![
-        // avatar ordering issues
-        "src/test-resources/omnibus/682993AC.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/0D901EE6.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/7FEF71E4.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/245E93CB.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/A643C5F4.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/7533372B.bitsy.txt".to_string(),
-        "src/test-resources/omnibus/DBD5D375.bitsy.txt".to_string(),
-
         // fails because of sprite colours but also because a tile contains "NaN"
         "src/test-resources/omnibus/DA88C287.bitsy.txt".to_string(),