Idea of playing your favorite game genre in your web browser for free with and against thousand of players is a really tempting one. Commercial massive multiplayer games are all made in the same way, RPGs with class and skill systems, levels, magic, armor and weapons. They require constant attention from player and take too much time for anyone who wants to have some real life (you know, job, family, friends…). Browser games are more suitable for turn based gaming where you are required to log on now and then and give some general orders but you don’t have to be online often. Most genres could adapt such games but there are some which are more suitable.