Abstract
World War Online is a massive multiplayer strategy browser game made by Chilltime. This work's objective was to improve the previous battle system by reworking it completely both in gameplay and user interface, so that players would feel like they had more control over the outcome of each battle, reducing the random factor, and also to increase the number of players actively playing the game. We start by analysing the previous battle system in detail and then we analyse other games' with similar concept but with more robust battle systems. Afterwards, we describe the usability issues found on the previous battle system through user testing. As for our solution, we start by describing in detail its implementation and how it came to be by detailing the prototype evolution and its testing with users. Finally, we present the results obtained from this work for this new battle system.