Sundy Stairway is a role-playing game developed by Yun Seven for Android. The game follows the story of Sunday, a teenager who moves to Calendar Town with his family. The town is shrouded in mystery, with unexplained deaths and suicides happening frequently. Sunday's life takes a dark turn when his relative is found dead in their home. The game takes you on a thrilling journey as you help Sunday unravel the secrets of Calendar Town.

The game offers an immersive experience with its well-crafted storyline and exciting gameplay. Sundy Stairway is a game in development, but it already promises to deliver a unique and engaging experience. The game is free to play, making it accessible to a wider audience. With its intriguing plot and excellent graphics, Sundy Stairway is a must-play for all role-playing game enthusiasts.