Well it's pretty simple. Basically, to grab a ball off the rack, you stick either your right or left hand straight out to your side. You can slide side to side in order to line up your shot. As far as rolling the ball down the lane, you just bring your arm straight back and at this point you have the option to throw it straight or put a spin on it. To throw it straight you bring your arm straight forward following the path you brought it back. To place a spin, you bring it forward but end somewhere across your body. Depending how far you go to the opposite side of you're body determines how much spin will be placed on it. That's basically it, but it all can be done in one fluent motion as if you are really at the alley.
Not hard to learn the basics and get a few pins, but on higher difficulty it can be a very challenging game, border-line realistic. (Assuming you can't bowl in real life like myself).
The only minor issue I picked up on during the short time we played was the camera can lose track of who's actually playing (On all games). What I mean by this is that in the beginning it'll ask how many players are playing. The kinect realizes who is controlling which character, and where they are standing in the room. However if someone walks by in the camera's field of view (Cat's and Dog's were a big issue). It will stop game-play and ask the player(s) to raise both of their hands above their heads so it can pick out which people are the ones it needs to follow. It'll figure it out and then resume game-play, but sometimes the littlest movements by someone spectating such as tapping their foot would throw it off.
Long post
![Embarassed :oops:](./images/smilies/icon_redface.gif)
, sorry. To answer you're question I assume the camera realizes your hand was moving backward and is now moving forward. It releases at the same point you typically would in real life. Pretty cool.