diff --git a/enemize/src/rom.rs b/enemize/src/rom.rs
index 8b7a2e0..95b1fb6 100644
--- a/enemize/src/rom.rs
+++ b/enemize/src/rom.rs
@@ -69,6 +69,29 @@ impl RomData {
              && self.rom_data[self.asar_symbols["enemizer_info_table"] + ENEMIZER_INFO_SEED_OFFSET + 1] == b'N'
     }
 
+    pub fn is_randomizer(&self) -> bool {
+        let acceptable = [
+            // item rando
+            b"VT",
+            // entrance rando
+            b"ER",
+            // door rando
+            b"DR",
+            // Berserker's multiworld
+            b"BM",
+            // Berserker's multiworld doors
+            b"BD",
+            // Archipelago
+            b"AP",
+            // Archipelago with door rando
+            b"AD",
+        ];
+
+        acceptable.iter().any(|abbr| &abbr[..] == &self.rom_data[0x7FC0..0x7Fc1]) ||
+            (self.rom_data.len() >= 0x20_0000 &&
+             &self.rom_data[0x7FC0..0x7FCE] == b"ZELDANODENSETSU")
+    }
+
     fn assert_rom_length(&self) {
         assert!(self.rom_data.len() >= ENEMIZER_FILE_LENGTH, "You need to expand the rom before you can use Enemizer features.");
     }