Stolen from another forum I posted this on:
I noticed there was no topic on Dota 2, since the tournament has already started and will end on either the 21th or 22nd AND
the fact you can sign up for the beta as of a few hours ago
it looks like they've taken it down, sadly. (http://www.dota2.com/tournaments/international/
Anyway, for those who haven't heard, here's a rough overview of the game genre and Dota 2 specifically (shamelessly stolen from the Dota 2 blog(http://blog.dota2.com/
But first some of you might be thinking, “What is Dota 2?” Dota began as a user-made modification for Warcraft 3 and has grown into one of the most played online games in the world. Following in the tradition of Counter-Strike, Day of Defeat, Team Fortress, Portal, and Alien Swarm, Dota 2 is the result of Valve hiring the community developers who built the mod and giving them the chance to finally build a full product out of their idea with the help of a professional team of developers and artists at Valve.
As for the gameplay, it’s a little hard to describe. The camera is set in the traditional RTS perspective, but it wouldn’t be fair to call Dota an RTS. And while each hero starts at level 1, and many times hits the level cap of 25, it wouldn’t be fair to call it an RPG.
Lots of people have tried to assign various genre names to Dota, but we think Action RTS is probably the most descriptive. And while we don’t spend a lot of time trying to figure out what genre the game is inventing, we can’t stop playing it internally and we’re pretty excited to show everyone how we’re doing.
Here's an overview of some of the (many) improvements over the original Dota (and in some cases, League of Legends and Heroes of Newerth!) -
-Reconnect should you drop connection
-An AI replacement for someone who leaves the game (and allegedly allowing people to sub in during a game should they want to take the slot of said leaver.)
-A robust bot system to help practice new heroes on your own.
-Being able to play with anyone around the world on one server.
No word as of yet on how much the game costs (if it's not free to play, which seems very likely).