Deemo is a Music, Rhythm, and Single-player video game published and created by Rayark Games for mobile devices such as Android and iOS. The storyline of the game revolves around a young girl named as Alice, who falls from an open trapdoor in the sky, and a strange mysterious character known as Deemo, who will assist the girl to find a way to her own world. During the gameplay, the player needs to play piano to grow a tree sapling sprouting from the piano. Different rooms of the structure will open for the protagonist to simulate as the tree grows. During the gameplay, the player will encounter a person wearing the white mask and gown, named as Masked Lady, who help out the player to grow the tree. When the tree stops growing at the twenty-meter height, the player finds a stairway and walks onto it with Deemo. The stairway takes the player to the chamber with another piano covered world. The tree in the game stop growing against at the height of 50-meter, causing unlock the final room to explore from thorns. With addictive gameplay, superb mechanics, and brilliant soundtracks, Deemo is the best game to play.