In Unity can you make games that have online features and how can you test it to see if it works like this eg. here
2 Answers
2Yea...
I think it's only pro, but Unity comes with Raknet, which I think is pretty good...
You can also use SmartFoxServer, which actually has a whole release for Unity...
Photon and like, 3 other places support Unity...
So for sure, but you have to fix it up yourself... It's not a point click instant-on program...
I suggest the Zero-to-Hero guide, which you can find, although hard-ish...
But yeah, good luck!
Trackmania is not the easiest game to produce ! But it is possible to make a networked game with Unity Built In System !
I suggest you begin by trying some multiplayer examples ! The Zero-to-Hero guide, quoted in the other answer is here : http://forum.unity3d.com/threads/29015-UniKnowledge-entry-Unity-Networking-the-Zero-to-Hero-guide This one takes some time to understand, but it is good.
To test multiplayer, you must have at least a client and a server. So you have to compile a scene, so you can have a webplayer (server for example) and a client running on the editor.