What can I do with the Fretta Gamemode Base?

So, thanks to the help of some people on here, I managed to download Fretta13, since I wanted to take a look at it. My community is interested in creating a Minigames server. I was wondering if you guys could give me some advice or something.

Like, what can I actually do with Fretta13 and how easy is it to work with? Like, anything at all would be great here.

Basically it allows your game modes to be linked through a map voting system as well as a round controller and other various configurations. Check out the tutorial from the GM12 version.