Does the game have Single Player mode?

Yes it does. To view all available single-player modes, simply tap on “Single” on the main menu. From there, you’ll have Hero Stories, Chronicles, and Practice. Take note that your hero can still earn EXP and generic mission objectives can be completed during practice matches.

Hero Stories are the story missions for each hero. You can replay them if you want.

Chronicles are special missions against AI players, with special rules or deck limitations. Clearing them will earn you a reward. Clear chronicles missions in the current difficulty to unlock new missions at the higher difficulty.

In Practice mode, you can select your opponent and difficulty. The deck of the AI hero will vary depending on the difficulty.