Blade Mistress

"Blade Mistress is a high-fantasy, server-centric, ultra-low bandwidth 3D MMORPG. It's high-fantasy because we wanted to make a swords-and sorcery game. It's server-centric because we wanted to make money, charging players a modest monthly fee, and to do that, we needed the security only provided by a server-centric model."

Free trial period, then pay to continue playing.