The main secret of the popularity of many browser-based games - easy and FREE. Often the user does not even need a client program - enough to go to the official site, register, enter the password and start playing. In addition, players who are "serious» MMORPG like World of Warcraft are not available due to a low speed connection, a weak computer, or a lack of money, simply have no choice if they want online role-playing game. Finally, many "full» MMORPG unceremoniously not take - you need to read the multi-management, learn tricky role system. But for the development of most browser games sverhusily not required.