A Game Prefix allows us to run more than one Lexicon on this Wiki simultaneously.
It's the same thing as a Wiki Namespace, and it's as trivial as adding the prefix and a colon to every article's name that you write within that game.
So for example if a game prefix is "One", then the articles you write should be named: "One:Article1", "One:Article2" and so on.
In linking syntax, then, what you will most likely desire to do is use the "|" character to have a link name and then preferred text.
In the first example above, your typical link text will be:
This would put the link in the right game (the One game) but in links within that game, the name of the article will simply show as "Article1".