Happy 'Stranger Things' Day! Here's a bunch of sweet video messages from the cast.

On Nov. 6, 1983, poor old Will Byers went missing. A lot of people suffered.

But a lot of people also benefited massively, because we all got to spend many a thrilling hour watching his struggle play out on our screens!

In other words, Nov. 6 is a days of highs and lows. And this year, the stars of Stranger Things were all about the highs, starting with Sadie Sink, who plays our favourite skater, Max.

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Yep, not only did we get a sneak peak of the title for Season 4, episode 1, but we also got to hear short little video messages from most of the main cast.

Here's Lucas (Caleb McLaughlin), who apparently has an actual beard these days.

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And here's Murray (Brett Gelman).

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Dustin (Gaten Matarazzo) almost gave us another rendition of everyone's favourite Season 3 song.

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Here's Mike (Finn Wolfhard), with a short but sweet message.

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And here's Mike's mom, Karen Wheeler (Cara Buono).

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Oh, and if you were worrying about the lack of Erica Sinclair (Priah Ferguson), fear not.

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Here's Suzie (Gabriella Pizzolo), ready to put that song back in your head.

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Larry Kline (Cary Elwes) wants to wish you a happy Stranger Things Day, too.

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Eleven (Millie Bobby Brown) even checked in from her holiday.

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And finally, the man himself: Will Byers (Noah Schnapp). All he ever wanted was to play D&D in peace.

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Happy Stranger Things Day!