Simple Realtime Multiplayer Game

I need to create a simple realtie multiplayer game , thats have feature such as
1. Multiplayer based game
2. Number of player in one game estimated 7-10
3. Login Needed Into The game
4. Player can create a room for waiting other player to join
5. Game play :
- there is a multi map 2D
- User can switch between map (only room maker can swith the map view)
- All user will see one map at a time
- Map view is from above
- View can be zoomed
- Player action is to select predefined object put it somewhere in the map , and give it a name and notes
- Player action is also can give a comment to other player object
- Player action is also can draw line and arrow with solid or dotted
- Player can see object details (name , and notes ) by clickign the object
- Player can rotate object
- Player can delete created object
- Player can move object
6. Game can be saved by room maker so can be continued later
7. Game can be exported to be static image
8. when going back to previous map , the previous state is kept
9. Object and Map can be upload on CMS
10. no user registration , because its for internal game , user list will be predefined