The MOBA genre has one flaw that most accept as par for the course; it never really changes. Sure, a new hero may be added in or a fair amount of balancing but the general game itself remains the same. Valve has announced bit of a change up with the addition of 10 vs 10 custom game mode.
The new 20 player mode was first shown at The International where 20 professional players were picked out of the audience to play. As you can expect it was a bloodbath with hundreds of kills and ridiculous kill combos. Good times.
The new mode was played on the Reborn/Source 2.0 client so everything looked good. This is sure to be a crowd pleaser for fans of Dota 2 that might be looking for something a bit more intense.