diff --git a/commands/retrodeck.py b/commands/retrodeck.py
new file mode 100644
index 0000000..e66a531
--- /dev/null
+++ b/commands/retrodeck.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+from argparse import ArgumentParser
+from csv import reader
+from hashlib import md5
+from pathlib import Path
+from urllib import request
+
+parser = ArgumentParser()
+parser.add_argument(
+    "-d",
+    "--directory",
+    default=Path.cwd(),
+    type=Path,
+    help="Folder to scan for existing bioses",
+)
+args = parser.parse_args()
+
+with request.urlopen(
+    "https://raw.githubusercontent.com/RetroDECK/RetroDECK/main/emu-configs/defaults/retrodeck/reference_lists/bios_checklist.cfg"
+) as response:
+    bioses = reader(response.read().decode().splitlines(), delimiter="^")
+
+    for bios in bioses:
+        if "pico" in bios[0]:
+            continue
+
+        bios_path = args.directory / bios[1] / bios[0]
+        local_path = list((args.directory / bios[1]).glob(bios[0], case_sensitive=False))
+
+        if not local_path:
+            print(
+                f"\033[91mMissing {bios_path.relative_to(args.directory)} on "
+                f"{bios[3]} with hash {bios[2]}\033[00m"
+            )
+        elif bios[2] == "Unknown":
+            print(f"Unknown checksum for {bios_path.relative_to(args.directory)} on {bios[3]}")
+        else:
+            with open(local_path[0], "rb") as file:
+                checksum = md5(file.read()).hexdigest()
+
+                if checksum != bios[2]:
+                    print(
+                        f"\033[93mChecksum mismatch for {bios_path.relative_to(args.directory)} on "
+                        f"{bios[3]}: {checksum}\033[00m != \033[92m{bios[2]}\033[00m"
+                    )