Detana!! TwinBee, originally released outside Japan as Bells & Whistles, is a vertical-scrolling shoot-'em-up game originally released by Konami in 1991 as a coin-operated video game. It is the fifth game in the TwinBee series and the second released for the arcades following the original Twinbee. Detana!! TwinBee marked the debut of Japanese animator Jujiro Hamakawa (credited under the pen name Shuzilow.HA) as the series' primary character designer for every subsequent installment. Detana!! TwinBee was awarded "Best Shooting Game of 1991" by the Japanese arcade game magazine Gamest.