diff --git a/desktop_version/README.md b/desktop_version/README.md
index dddea261..fb86f729 100644
--- a/desktop_version/README.md
+++ b/desktop_version/README.md
@@ -35,6 +35,10 @@ macOS may be fussy about the SDK version. How to fix this is up to the whims of
 however Apple wants to make CMAKE_OSX_SYSROOT annoying to configure and retain
 each time Xcode updates.
 
+Including data.zip
+------------
+You'll need the data.zip file from VVVVVV to actually run the game! It's available to download seperately for free in the [Make and Play](http://distractionware.com/blog/category/vvvvvv-make-and-play/) edition of the game. This is intended for personal use only - our license doesn't allow you to actually distribute this data.zip file with your own forks without getting permission from us first. See [LICENSE.md](LICENSE.md) for more details. (If you've got a project in mind that requires distributing this file, [get in touch](http://distractionware.com/email/)!)
+
 A Word About Compiler Quirks
 ----------------------------