Thanks to Grieg Riddle for the awesome playfield picture. :)

Quick rules:
Hit all the KING targets to light the inlanes.

Inlanes when lit, raise left ramp to enable lock.

Lock three balls for RAID! Multiball.
Hitting inner right lane Gun target when the green light is lit (RELEASE FURY) starts multiball - when you have two or fewer balls locked.

Object:
Complete 7 CRIME SPREES at the Hotel Lex and enter the Kingpin's Vault.

Insert coins for one to four players.

Skill Shot: Launch on Go to complete orbit (NOTE: This is the engineering prototype rule, for this conversion, launching the ball and completing the orbit will award skill shot if properly timed - due to unknown real-life autoplunger speed)

Spell KID on top of playfield to receive multi bonus award at end of ball.

Shoot ball into HOTEL LEX to start one of 6 gangster modes.

Complete gangster mode and shoot ball into HOTEL LEX for bonus.

Hit all drop targets to light SPIN CITY for ball lock.

Lock 3 balls for RIOT multiball.

Shoot ball into HOTEL LEX during mutli-ball for bonus.

Shoot left and right outer lanes for POWER METER bonus at end of game.

Defeat Kingpin and shoot back into HOTEL LEX for super jackpot.