Heroes of Newerth from Savage creator S2 Games is an online game succeeding DOTA. The game is re-creates the authentic feel of DOTA while updating the graphics and adding new useful features. Much of the interface and gameplay seems to stay very true to the original mod with the blessing of "IceFrog," a key contributor to the DOTA mod and community.
Heroes of Newerth is a game title in the DBG genre (DotA based games)
So if you're a DotA fan, you better check out this game.
I've played it and it's pretty cool even if it's still in beta.
If you need beta keys, you can try getting them from the makers of HoN.
https://facebook.com/heroesofnewerth
http://heroesofnewerth.blogspot.com
http://heroesofnewerth.com