diff --git a/main.py b/main.py
index 74aa120..124c9fb 100644
--- a/main.py
+++ b/main.py
@@ -7,7 +7,7 @@ logger = Logger('RomInfo')
 
 if __name__ == '__main__':
     if len(sys.argv) == 2:
-        if sys.argv[1].endswith('.nds'):
+        if sys.argv[1].endswith('.nds') or sys.argv[1].endswith('.ids'):
             with open(sys.argv[1], mode='rb') as nds:
                 logger.info('Title           : {}'.format(nds_get_info('title', nds)))
                 logger.info('Game code       : {}'.format(nds_get_info('gamecode', nds)))
@@ -15,5 +15,14 @@ if __name__ == '__main__':
                 logger.info('Unit code       : {}'.format(nds_get_info('unitcode', nds)))
                 logger.info('Encryption seed : {}'.format(nds_get_info('encryptionseed', nds)))
                 logger.info('Device capacity : {}'.format(nds_get_info('devicecapacity', nds)))
+                if 'DSi ' in nds_get_info('unitcode', nds):
+                    logger.info('Game revision   : {} (DSi only)'.format(nds_get_info('gamerevision', nds)))
+                logger.info('Game region     : {}'.format(nds_get_info('region', nds)))
     else:
         logger.error('No ROM specified. App requires one argument.')
+
+# Info taken from:
+# https://dsibrew.org/wiki/DSi_cartridge_header
+# https://scenegate.github.io/Ekona/specs/cartridge/header.html
+# https://problemkaputt.de/gbatek-ds-cartridge-header.htm
+# https://gist.github.com/pleonex/6265017
\ No newline at end of file
diff --git a/rominfo/nintendo_ds.py b/rominfo/nintendo_ds.py
index d225bcc..0cdeaac 100644
--- a/rominfo/nintendo_ds.py
+++ b/rominfo/nintendo_ds.py
@@ -22,6 +22,12 @@ def nds_get_info(opt: str, inf: BinaryIO):
         case 'devicecapacity':
             inf.seek(0x014)
             return _capacity_lookup(int.from_bytes(inf.read(1), 'little'))
+        case 'gamerevision':
+            inf.seek(0x01C)
+            return str(int.from_bytes(inf.read(2), 'little'))
+        case 'region':
+            inf.seek(0x01D)
+            return _region_lookup(int.from_bytes(inf.read(1), 'little'))
         case _:
             return 'Unknown'
 
@@ -53,3 +59,15 @@ def _capacity_lookup(code: int) -> str:  # 512Mbit (67108864 bytes) (09h)
             return '{} MB ({})'.format(round(128 * pow(2, code) / 1024), '{}h'.format(str(code).zfill(2)))
         case _:
             return 'Unknown ({})'.format(code)
+
+
+def _region_lookup(code: int) -> str:
+    match code:
+        case 0:
+            return 'All (0x00 (0))'
+        case 64:
+            return 'Korea (0x40 (64))'
+        case 128:
+            return 'China (0x80 (128))'
+        case _:
+            return 'Unknown ({})'.format(code)