Great guns

• Radio adventure series

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
to come on like gangbusters (c.1940) is from popular U.S. radio crime-fighting drama "Gang Busters" (1937-57) which always opened with a cacophony of sirens, screams, pistol shots, and jarring music.

Wikipedia Word definitions in Wikipedia
Gangbusters was a historical roleplaying game designed by Rick Krebs (based on his original game called "Bloody 20's") with Mark Acres assisting in its development. The game was published by TSR, Inc. Two editions of the game were published. The first edition ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Then Sunday comes, and they play like gangbusters .

Wiktionary Word definitions in Wiktionary
a. very successful or profitable n. (plural of gangbuster English)