The X-Force movie was first announced back in 2013, and Jeff Wadlow, whose credits include Cry_Wolf, Kick-Ass 2 and True Memoirs of an International Assassin, was the man Fox originally tasked with penning the script.
Released on February 12, 2016, Deadpool earned numerous positive reviews and made over $783 million worldwide off just a $58 million budget.
One should also remember that during this time, while the Deadpool movie was still technically in development, there was no indication that it would be made anytime soon.
However, in the summer of 2014, the animated Deadpool test footage leaked, and that finally got the ball rolling on making the Merc with the Mouth’s standalone adventure become a reality, and it paid off big time for Fox.