Let's Waltz is an expansion for Grand Austria Hotel released in 2021 after a Kickstarter campaign.
The expansion includes 5 modules and the official automa designed by Mauro Gibertoni with Simone Luciani and Virgigno Gigli.
The automa can be used with just the core box or with any combination of modules (with the exception of module 4 "Start player").
The automa was developed on the basis of the Mautoma (http://www.mautoma.com/grand-austria-hotel), but it has been improved making it more smooth and faster to manage.
In these videos you can see how the automa works.