The current version on King of Towers sees regular changes, as you can see on the Change Log. But before this, there was another, previous version, that was only deployed to Facebook.
This page will detail some of the features of that old, lost version.
Tavern[]
In the previous version, you had 5 deals per day and you could shuffle every 60 min. The cost of permanently increasing your picks was 100 diamonds, and there were 18 cards on the table
During an event:
Heroes[]
Heroes had this look:
Quests[]
An example of a quest on the old version, Facebook
Magic Ward[]
Examples of old costs in upgrading magic skills
Training Grounds[]
Old cost of unlocking slots
