flash game development using playerIO multiplayer api.

We need to develop a multiplayer flash game using the playerIO ([login to view URL]) multiplayer api. The game is micro racers, this is a single player version. We want it as a multiplayer game using the playerIO api, as well as a single player version of this game. ([login to view URL]) The link gives the concept of the game. 1. The design is more or less the same however we need better physics. 2. The game will have 20 tracks, so that we can select a track which will be played by our players for say a month. Every month we should be able to enable a single track out of the 20 say for that month. 3. Every player in the multiplayer game will have a different color car. Maximum number of players in multiplayer game will be 6. 4. The game graphicds design also has to be done by the developer. The graphics are not too complicated, more or less like the game link given above. 5. Using playerIO requires design of game lobby in AS3 and game server side code to be made in c#.