Not much time to explain, as I must leave for school soon, but basically it's a WC3 map (DotA) that's had so much attention it's been made into its own standalone game. It's certainly not for everyone, hence many people ragequit the game after one or two days, but as it's in closed beta and registration is only going to be open for roughtly the next 24 hours until an indefinite amount of time and I'm kinda lonely here, I thought it worth mentioning.
I pre-ordered and thus got beta keys. I think I may have 1 or 2 left if anyone else is interested. Just lemme know, shoot me a PM or something to get my attention.
It's essentially DotA, but seeing as how S2 has it on a stand-alone engine, things run smoother... Things that aren't possible on Wc3 are possible now. There's a very good stats/record keeping system, a skill rating system, a map editor, client-server netcode (One person lagging won't effect all other 9 people in game), the ability to reconnect to a game if you've been dropped/computer crashes, built in VoIP, and re-bindable hotkeys.
If you're familiar with the Savage 1/2 games by S2 (Beast vs Legion?? RTS/RPG sorta game..) then you'll be familiar with most of the heroes, as they're rehashed to fit DotA. Some DotA heroes have been dropped, and/or completely replaced. There's also some brand new heroes.