A free program for Android, by Syntaxity.

A mysterious and dangerous castle awaits you, a place that is full of dangers, hidden secrets, and the mysterious hunter’s quest for treasure. You have to travel back to the ancient times and take the place of the mysterious and cruel Dark Lord. But there is more to the story than that, you have to go back in time to the medieval age, to the time of the Blackthorn Castle. You need to make your way through the castle, the dark forest, and the endless wilderness that surrounds the castle, in order to reach the treasure and find out what the evil hunter is doing in the ancient castle.

The game is based on the legend of the mysterious hunter, who is searching for treasure. He is a dark wizard who is casting a spell on the whole world, turning the daylight into darkness and the darkness into daylight.