In the words of Total Nuclear Annihilation: "Lock stealing is real. Protect yourself."
Left ramp locks balls. Hit captive ball to top of ramp to release balls. Otherwise build up a 5 ball MB.
If 4 balls are locked, the skill shot saucer or the left ramp will start Meltdown with all 5 balls.
During Multiball, shoot the left ramp (worth 100k) to advance the Playfield multiplier towards 10x!
Plunging the upper right saucer awards 50k or Meltdown if 4 balls are locked.
Loading 4 balls in the lock lights Special (1M) on the center target.