"Who's There?" - is the educational and entertaining game, that improves versatility of its user. Application was introduced first time to their users in 06.05.2014 on Semester Project Presentation of 2nd year students of Suleyman Demirel University by Nurzhan Izdauov. Game consists of four playing modes. Blitz Mode - is the mode where user plays for limited amount of time. Marathon Mode - is the mode where user plays till the first incorrect answer. Battle Mode - is the mode where two users play with each other, which will be implemented later. Training Mode - is the mode where user just tries to learn without any limits of time, or possibility of loosing. Learning Mode - just to learn an information from wikipedia.org about our celebrities. I hope you will enjoy it!