EARTHSHAKER – Rom Upgrade Set

Rom Revision: CPU 2 Rom Set [U26, U27] (This listing is the most current official release)

Revision History: (Included for reference)
Game Version L-3

U26 : Checksum: F1E8
U27 : Checksum: CD00

Game Version F-1 (Family Mode)
This version removes the ‘oooh bitchin’ sound quote from
the game.

U26 : Checksum: EDEC
U27 : Checksum: D0FC

SOUND ROMS:

Revision History: (Included for reference)

Sound Version L-1

U4 : Checksum: E6B0

Speech Version L-1

U19 : Checksum: 8EAF
U21 : Checksum: E354
U22 : Checksum: 6C4C

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Also available is the Unofficial l-4C version from Soren. Here is the revision info pasted from the readme if you are interested in that version:
Earthshaker rev. L-4C

Release note

Revision L-4C

Jackpot values are player individual.

Jackpot value is reset to 1M at start-of-game and when collected.

Jackpot value increment 1M -> 1.5M -> 2M -> 2.5M on 3-bank drop target completion only. It stays at 2.5M on additional completions.

Center ramp scoring: 25K. When 99 Miles achieved: 50K. Plus 5K on the left inlane.