I play Shadowmere, been playing it for the past 10 years. Great lightweight game in the browser, text based - so no hassle on ur connection or any need to install anything. If you enjoy strategy and RP then its your best bet imo. I have tried out several others, like 5 pillars, tribal wars and travian etc etc. none of them come to the complexity and strategy that Shadowmere is offering...
you should try it out :
Shadowmere | 100% free multiplayer fantasy game<br>Free and friendly chat