Whew... enough monkey talk, at least for me. Since a few people asked about it, let's talk MagNab (which does NOT refer to any inappropriate touching of, or by, magpies).
There are four magnets in Oktoberfest. One each is located on either side mid-playfield, near the OKTOBER and FEST target banks. Players can't control these magnets; they're there to add some fun chaos to the game. (And sometimes they can help you -- I've watched the OKTOBER magnet happily play ping-pong with those targets, rapidly accumulating several target hits on the player's behalf. You get extra points for this!)
Then there are two other magnets: one located above the TAP lanes at the top-right of the playfield, and one located above the upper-right flipper in the right orbit. These ARE player controllable, using the extra right-side button... that's what we call MagNab. You earn MagNabs by shooting the lit "MagNab" shot, which alternates between the right ramp and the captive ball. (Pro tip: one of the steins awards an extra MagNab when you shoot the lit MagNab shot... and like all steins, you can stack their powers.) Hitting the MagNab button energizes both the right orbit and TAP lane magnets for a couple seconds. Both magnet choices are useful: the right orbit one gives you a nice feed to the UR flipper, which has several important shots including the upper ramp (beer barrel lock) and the bartender (advance toward or collect a stein)... the TAP lanes advance PLAYFIELD X. (Pro tip: one of the steins gives an extra advance to Playfield X when you complete the TAP lanes... and did I mention, like all steins, you can stack their powers.) Obviously, this gives some interesting choices about where and when to use your MagNabs.
There are also occasional automatic MagNabs... an inlane -> opposing orbit combo will usually catch the ball at the TAP lanes, and every X pop bumpers does an auto nab at the UR flipper when the ball exits the pops to the right orbit.
We can't wait for everyone to play and learn Oktoberfest!