Where to begin?

Unity Engine
1

I’m looking to create my first game, a small project which I hoped to polish well over months and release it on as many platforms as possible (iOS, Android, Xbox, PS3, Steam (PC,Mac,Linux), as many as possible). I’ve been trying to look up some different tutorials of how I can accomplish my game, but I haven’t found anything. The basic rundown of my game is a top down multiplayer game. The angle will be similar to games such as pop tag (top down but provide a bit of a 3d view with 2 viewable sides of blocks, see http://i.ytimg.com/vi/w_TebrgF3Yo/0.jpg for example) and the map design will be similar to PacMan. The main mechanic of the game that set’s it apart from any other I’ll leave for another day (no other game has done this to my knowledge). I’m debating on 4-8 players and the other players would need to be controller by computer and other players for multiplayer battles. I’ve been thinking about buying a top down shooter script from the asset store but I figure if I could make it myself the better. Any idea where I could possibly begin with this?

2

With something much simpler. Save that Great Idea for maybe your third game, by then you will know enough to figure out where to begin and stand a chance to actually complete it.
Trying to do cross-platform multiplayer and AI without having made a simple, single-player game yet…? Forget it.

3

Do you already have al that licenses and programming experience? If you don’t, please make sure that you have to program all the input sources identical, like the xbox controller, the android and ios touchscreen, the ps3 controller. They have all different codes that you have to buy or write by yourself. Also you need some kind of server somehow if you want to play multiplayer…

4

I don’t plan on making it cross platform, just launching it on many possible platforms, although in the end it’ll just just end up with an iPad and web release. It’ll just start as a small singleplayer game, not sure how I can make it any simpler without making some tetris or pong clone which I’ve done 10 times over.