The secret of the stone

The story of a brother who receives a message from his sister and goes to look for her in the childhood home. Along the way, he encounters riddles that his sister loved so much. The player will have to solve not the most simple, but interesting riddles, find keys to reach the goal. Find items, discover all the hidden doors and find out what is hidden on them. Interactivity, ease of control and an unpredictable ending.