Forbidden Valley is a game that lets you delve into the ancient world. This world is forbidden to everyone. Only the chosen few are allowed to enter this valley. The rest of the world dwells in fear of the unknown. And the most terrifying thing is that the veil of the valley is becoming thinner and thinner.

Your father has been a brave man. He has dreamed of entering this valley. But he is old and knows that the dreams of an old man are just dreams. He knows that the goal is far from easy. He needs to find the key to the entrance. And the only key is hidden in the ancient world. The key is hidden in a way that no one can find it. And even if you do find it, the key will not open the entrance. The only way to open the entrance is to find the secret. And you will have to find the secret in order to open the entrance.