With the popularity of online role-playing games, a web-based battle application is designed to help the players to improve their characters for the combat. The developed prototype concentrates on one-player-multi-characters mode. The project consists of three major objectives. The first one focuses on the development of web-based interfaces for user registration and login. This functionality benefits the user with an individual and personalized member account. The second goal is to improve the existing web-application for character creation so the user data input is stored in a database for posterior retrieval. The third objective refers to the development of a web-based battle application that allows players to test created characters in a battle, one character against another one. This project also contributed with a logical database model that overcomes some design issues, such as normalization problems, in the current database model.