Clearly, you want to relax.
What can you expect when both opponents select zerg, a race that is so obviously inferior in FFA?
Now, in about 4 minutes, I've got two zergs with like 20 hatches each one going mass hydra and the other going mass ling. Fortunately, for the moment they are fighting each other. However, the moment one of them comes knocking at my door nears. Solution? Well, for every PvZ situation there is a solution even if it's a hacked FFA on fastest - corsairs. I can't express how I love those little ships. They do just like everything, and, most importantly, they pop oviez. Lots of oviez.
Result: 22.22 long game, a victory, 176 units produced, 1600 units killed. The last guy said I was using an "interesting tactic" he's never seen before. Well, what can I say?
Grab the game here if you want. Take notice that this game contains thrilling action of corsair vs overlord slaughter. I nearly fucking guarantee you haven't yet seen THAT many overlords being killed in a single game, and if you love popping overlords as much as I do (solely for the sake of it, strategy and tactics aside, I just love how they explode), you will find this game a piece of art.
Hackers never get any smarter though ^^