Remember THQ's April Fool's joke? it wasn't a joke at all. The publisher announced the standalone Saints Row: The Third expansion Enter The Dominatrix is really coming this fall.

Arriving on Xbox 360, PlayStation 3, and PC for $29.99, this expansion adds "the most requested gameplay features" from the Saints Row community: freaking super powers.

“Faster than a speeding cyber jetbike, more powerful than a roided-out Luchadore, able to leap flying aircraft carriers in a single bound… That’s the power you’ll find inside the Dominatrix. Use it for good. Use it for evil. Use it for whatever you want. As always in Saints Row, it’s up to you,” said Danny Bilson, EVP of core games at THQ.

Enter The Dominatrix takes place after the events of Saints Row: The Third. Here's a quick rundown of the plot:

For centuries, alien warlord Zinyak has eyed Earth and its precious natural resources and females with a watchful eye. As he prepares an armada for invasion, he has only one worry: the Third Street Saints.Once a simple street gang from Stilwater, the Saints have evolved into a global empire, replete with bombastic TV advertising and tasteful consumer products, the kind of TV advertising and consumer products that would give any alien warlord pause. Clearly, the Saints are the biggest badasses on Earth.

Now, in order to prepare his forces for domination, Zinyak captures the leader of the Saints and imprisons him in an elaborate virtual reality simulation. This simulation program looks and feels like Steelport, but it is the world that has been pulled over your eyes to blind you from the truth. Here, you are a slave. Welcome… to the Dominatrix.

Expect to hear more about Enter The Dominatrix later this summer

To be extra extra clear, THQ explained to us that Enter the Dominatrix is a standalone "boxed retail product" that can be played without owning the original Saints Row: The Third disc. It will be available solely at retail (on disc) at launch this fall.