The Roto Grip No Rules Exist is a solid reactive cover, wrapped around the Chaotic asymmetrical core. The Exist can be found in the HP4 line of bowling balls. The cover is called Reckless and has a 2000 pad finish. This is the same cover that was on the Dare Devil Trick. The numbers on the Chaotic core are 2.51 Rg, 0.053 diff, and 0.018 intermediate diff, in 15lb bowling balls.
I drilled the No Rules Exist with a 3.5x5.5x2.5 layout. This layout puts the Exist right in between my current No Rules, and the No Rules Pearl. The Exist is earlier and more controlled off the spot than the Pearl, when keeping my hand behind the ball, but gets more angular and stronger off the spot when rotating my hand around the ball. The Exist is easier to get through the front of the lane than the original No Rules. I like the Exist on medium heavy to heavier volume league shots with clean backends, which is what I wanted this layout for.
The Exist will be a good ball for bowlers needing a little extra help from the cover and core to shape up, but not be too angular off the spot. The cover offers plenty of board coverage with controlled shape. Roto Grip has done a real good job with offering different shapes on the lane from coverstocks, while still getting familiarity by using the same core. Thank you for taking the time to read my review of the No Rules Exist.