diff --git a/README.md b/README.md
index 30076f6a..048d6003 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,9 @@ Users must supply their own legally obtained game files locally. This repository
 - [CMake](https://cmake.org/) 3.25+
 - [Ninja](https://ninja-build.org/)
 - [Clang](https://releases.llvm.org/) (LLVM/Clang toolchain)
-- A legally obtained copy of the game, prepared by the end user outside this repository
+- You need the game's original Xbox 360 disc image (ISO). Tools to extract it can be found here.
+
+After extraction, drop both the game assets and default.xex into the assets/ directory.
 
 ## Clone