The background is Mount Olympus itself, the home of the Greek gods that appear in the game. Every symbol is beautiful, and although you use the usual K, Q, and A symbols, they don't take anything from the design of other symbols. Even the paid watch looks lyrical, and golden writing is also a feature of the game.
Every god is represented by a special color, shining in their symbol. There are six, including Athena, Poseidon, Zeus and Hercules.