Ok puzzle fans, this is it. Sound the alarm. THIS IS NOT A DRILL. The Room Three is available on the App Store right now. If you’re a fan of the series, that’s all you need to know. Stop reading and get downloading. It’s a $4.99 purchase, but if past performance is any indication of future success, that’ll be five dollars incredibly well-spent.

If you’re not a fan yet, it’s time to change that. The Room offers intricate puzzles that require you to manipulate objects in a physical space to reveal hidden compartments, locked drawers, and more as you try to unravel its mysteries.

Android gamers won’t be able to get in on The Room Three yet, but there day is coming soon. “The Android version is progressing well,” says Fireproof Games in a Facebook update today, “and we’ll post more details at a later date.”