There are 3 maps:
map1: Big TD is a map (4 players) where you build towers and defend the road before the creeps/units get to the bottom, if they do then you loose! The video shows only level 5 of 20! :)
map2: TD survival is a map (2 players) where the players have to defend the road at two sides at the same time, the units spawns faster and faster and attacks your towers at the same time so you must build fast and smart! in 30 minutes of survival you will win!
map3: Protect the castle (4 players) is a map where you must protect your and your friends house in the middle at all cost!! or you'll die! You can either repair it or throw in an engineer;) After some minutes a shield will turn off and the enemy base house will no longer be protected, destroy it to win.
These maps will be available in januar 2011! Hope you like the video, pls rate/comment ;)