In Lights on! –project (http://www.metsa.fi/web/en/lightson) a mobile game will be developed. In the game four Finnish and four Estonian historical sites can be experienced with augmented reality characters. In each location these characters give the player some tasks, and by solving these AR tasks you can solve one mystery connected to the site. At the same time you are encouraged to visit all over the place and see different angles of it – and at the same time accidentally learn from the past a bit. This demo is the independent part of the joint game located to Vallisaari island. With the demo user experience and feedback will be collected and the feedback will be used for developing the final version of the mobile game to be launched in May 2018. There are three language versions available in the game: Finnish, English and Estonian. This demo has been developed by 3rd year students of Kouvolan Seudun Ammattiopisto. After playing the players are kindly asked to answer the short survey which can be opened in the game. Have a nice playtime in Vallisaari with our AR characters and thank you for the feedback!