In more recent updates (such as the 2025 Blazing Sands update), Imangi Studios made "Holiday Havoc" and "Winter Toyland" permanently available for purchase in the map selection screen for Version-Specific Downloads:

The is officially unavailable on mainstream app stores, but it lives on in the form of archived APKs for Android users willing to play offline. Before you go digging for the file, remember to backup your data and only download from trusted repositories to keep your device safe.

Because this is a time-limited event from several years ago, you cannot simply find it on the Apple App Store or Google Play Store via a standard search. Those stores always serve the current live version of the game.