The game's description on the App Store:
The dragon Zantorian locked Prince Rupert away in a castle tower on a dangerous and mysterious island. Lord Baldor dispatches the princess to investigate the hostile and unfamiliar territory and save the prince.Apple Arcade launched in September. The subscription-based gaming service provides iPhone, iPad, Apple TV, and Mac users with access to over 100 games with no in-app purchases or ads for $4.99 per month or $49.99 per year.
Playing as the princess, you must use your speed, courage, and savvy sense of direction to save the prince. Avoid traps, battle enemies, jump over obstacles, and collect gems along your journey to pay a ransom for the prince's safe return. But do it fast. The dragon is hungry!
In a recent press release, Apple promised that its Arcade service will receive new games and expansions every month.