Thanks. That'll help me out a lot! Now for some Japanese games that allow voice chat. hmmm...
Lang-8 is also a definite recommendation from me.
Japanese games are not.
You will not - mark my words,
will not -- learn
any vocab or grammar that will be remotely useful for VCE. For overall Japanese study, absolutely; but for VCE, no way.
Why?
Because they're not having conversations. They won't be speaking eloquently to each other and using words and grammar that make sense to English speakers.
みな、こんー 今北産業?サボちゃって入れたんだぜー gdgdgd ちくしぇー!!先生にばれちゃったで!悪いな、おちるぞ;;乙ー
Unless you can fully understand that and plan to use it in your Detailed Study, that's the kind of talk you should be expecting.
But in any other case, I would fully recommend it.

I would recommend other services for foreigners like HelloTalk (app) or Livemocha etc.
Japan-guide is good too.
If you have spare time and want to play games, by all means try it out... but don't view it as study :\