Join the beta
Free. iPhone with iOS 16.4 or later. About two minutes.
Nice to meet you at IAAPA Expo. Thanks for stopping by.
Guess the Coaster is iPhone only for now. Leave your email below and pick Android, and you'll hear first when it's on your phone.Email [email protected] with the subject "Keep me posted (Android)", and you'll hear first when it's on your phone.
Keep me posted (optional)
Hear first about new features (duels and crews reach beta testers first), the App Store launch and Android. About one email a month.
Check your inbox
We've sent you an email. Tap the button in it to confirm, and you're on the list. Nothing there? Check your spam folder, or try again in a few minutes.
Want to hear about new features, the App Store launch or Android?
Email [email protected] with the subject "Keep me posted".
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Get TestFlight
TestFlight is Apple's free app for trying apps before they're in the App Store. Skip this if you already have it.
Get TestFlight on the App Store -
Install Guess the Coaster
Tap the button, then Accept and Install in TestFlight.
Join the beta in TestFlightThe public beta opens in mid-November 2026.
Sign up above and we'll tell you when it opens.
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Play today's coaster
Open the app and tap Play as guest. No account needed.
Something not working? See Support.