Einherjar、UFO Online....., so many, I just wanna to try the following one-Bloody Bite, because it is bloody。 Ha, ha！And you?

More Recommendation: http://news.bbgsite.com/content/2012-01-31/recommended-new-browser-games-in-february-2012_1.shtml

Bloody Bite
"Power hungry creatures of the night are no longer hiding in the shadows. It's the beginning of the twentieth century and they have emerged to take over as the rulers of the Earth. Vampires and werewolves battle for dominion in metropolises around the globe including London, Berlin and New York. Humans have only one purpose now - to serve their new masters!

In Bloody Bite, you choose whether you want to play as a vampire or a werewolf and can then conquer buildings in select cities and expand them to increase your sphere of influence. Oppressed and ill-treated humans might provide more resources but can easily be provoked to riot. Missions will need to be completed all around the world in order to unlock new regions. Join a clan to conquer important cities together!"