Jason Kit
Lurker
The Obstacle World is rife with obstacles. You are now here like living in a jail. You forgot what the past was and why you was sent to this dreadful place. What you have is light only. Every light is lit by a letter bottle. It contains the password to unlock the secret of this world. You will find more partners in this world when you survive more.
Download:
https://play.google.com/store/apps/details?id=jasonkit.obstacle.station