Ninja Tower Windows game

Game will be a quick 2D teamplay-based fighter game, in which two team will battle each other.
There will be about 5 players per side, with specializations - tank, DD, healer, etc.
These classes will be more versatile that in most MMO's - ie. healer can still kick butt if played well.
Emphasis will be put more on skill than team composition and build.

Features:
-2D maps. Height will play an important role
-Large maps
-Very fast and intensive teamplay-oriented gameplay

Game will  support two different types of collisions.
- First is obstacle. You can stand on it, but you can't pass it by left or right side.
You can climb at obstacle if you have some skills in action games.
All shots are destroyed when they contact with an obstacle.
- Second is platform. You can stand on it. You can jump below if you press key "s".
Shots aren't destroyed when hit a platform.

Heroes don't collide with each other.