If enabled, hold the buy-in button when starting Air Challenge. Keep holding and hit Skydive @ 25M. You'll be awarded 50M and a MK3 code.
"No Limits" mini-wizard mode, all shots lit. Every shot collects and builds value by 1 mil. Caps out at 70 million a shot. Very lucrative.
"Meet Your Maker" wizard mode is the most lucrative mode in the game. Time out modes to get to it. Jump ramp worth 200 mil a shot.
Every jump ramp adds 5 million to bonus, which becomes huge. Successive combo jump ramps gives big points too (up to 25 mil a shot).
In MB if you shoot the left saucer, it will hold the ball for about 10 seconds.
Hit the ramps to start Payback Time (like T2), making all shots worth 25m
Passing through an inlane briefly lights the opposite orbit to score a Raceway award. These score 5M, 10M, 15M, 20M and Extra Ball.
In normal multiball, jump ramp is worth a flat 20 (?) mil a shot. If shot is repeatable, this is more lucrative/safe than the jackpots.