http://www.kongregate.com/games/ENDGamesLLC/vorp

If you like League of Legends, or Dota, you'll sure like Vorp!
I, personally, like it more than LOL! Its still in beta, and has gone out
like 2-3 weeks ago. Its fully in browser; you don't need to download
2 GB like for lets say LOL! The game has a lot of potential, and quality,
but it needs more players. Please join Vorp!

http://www.kongregate.com/games/ENDGamesLLC/vorp