Before the release of Windows 3.1, Microsoft released this thing, which the splash calls the "Windows graphical environment with Multimedia Extensions 1.0". It is just a repackaged version of 3.0 with some multimedia add-ons.
It appears that Windows 3.0 with Multimedia Extensions was only released to OEMS.

As you can see, the desktop looks identical.

It has the same selection of games as well. No Minesweeper yet!

There are a few new accessories however:

• An alarm clock
• A music player called Music Box
• A media player that is capable of playing waveform audio and .MMM animations.
• A sound recorder