Built on Googlebook: Play Henry Cavill’s video game to support Movember

Henry Cavill teamed up with Google to build “Mustache Protocol,” a 16-bit video game, on his Googlebook. Over the past few weeks, we’ve watched Henry’s creative process unfold. In the first episode of our behind-the-scenes series, he designed a handlebar-mustachioed hero using Magic Pointer and Quick Access. In the second episode, he used Rambler to create superpowers and health boosts. Today, we’re sharing the final episode — and the game is officially ready for you to play.

Watch the episode

In the third episode of the series, Henry puts the finishing touches on his game. Every great game needs a theme song, and the finale shows how with a little help from Googlebook, Henry brought the game’s audio together. Let’s dive in:

• Continue On: Henry previewed a smooth, ’70s-style track on his Android phone, then used Continue On to move the music to his Googlebook desktop without interrupting his flow.
• Rambler and BandLab: After Henry plugged in a drum pad to add custom musical beats using BandLab and recorded sultry baritone vocals, Rambler turned his voice commands into clean prompts to drop the track and sound effects into the game.
• Antigravity: Using Antigravity, the next-gen agentic platform built into Googlebook, Henry stitched together the final visuals, level layouts, and interactive elements — the last steps in taking the game from an idea to a live, playable build.

Play “Mustache Protocol” and support Movember

“Mustache Protocol” is ready for you to play. The retro-style game sends players on an epic quest across three levels to stop a rogue CGI agent from erasing every mustache on the planet. It is, as Henry told us, “super serious.”

You can play directly in your web browser or on your desktop or mobile device using simple arcade controls to move, jump, and swing your mustache-comb sword. To make the game uniquely his, Henry packed each level with hilarious power-ups and Easter eggs. See if you can spot all of them.

In honor of Movember, your gameplay supports men’s health. From November 11 to 30, for every game played, Google will donate $11 to Movember, up to $500,000. Every play helps drive awareness and funding for men’s mental health, suicide prevention, prostate cancer, and testicular cancer.

So fire up your browser and help us save the world’s mustaches. Head to googlebook.com/henry to play “Mustache Protocol,” watch all three episodes, and join the movement.