Special machines are temporary and among them you can find the Christmas, Olympic Games or Halloween Machines, as well as many more. These are normally launched at specific moments with the game's updates and are available for a fixed period of time.
Once that time is over, the machine will no longer appear, but you will have the possibility to extend its availability in exchange for coins. If the availability of the machine expires and you didn't get the cards it contains, such cards will be added to the VIP Machine.
We recommend that you activate the automatic update in your device so as not to miss out on any special machines. This way, the app will be updated every time a new version is released and you will be able to access all the special machines when they are launched.