CD1
"Down 'n' Dirty" 
"Playin' Games" 
"Love Toys" 
"Never Again" (cover of "Silent Sword", B-side of the single "Risky Woman")
"Deadly Player" (cover of "Lonely Player" - Devil Soldier)
"Take It or Leave It" (cover of "Milky Way" - Disillusion)
"Girl" (cover of "Girl" - Devil Soldier)
"Long Distance" (cover of "Long Distance Love" - Jealousy EP)
"In the Mirror" (cover of "In the Mirror" - The Law of Devil's Land)
"Sleepless Nights" (cover of "Sleepless Night" - The Law of Devil's Land)
"Find a Way" (cover of "To Be Demon" - The Birthday Eve)

CD2 - Unreleased TV Mix＋Bonus Track
"Down 'n' Dirty" 
"Playin' Games" 
"Love Toys" 
"Never Again" 
"Deadly Player" 
"Take It or Leave It" 
"Girl" 
"Long Distance" 
"In the Mirror" 
"Sleepless Nights" 
"Find a Way" 
"Slap In The Face (2021 remaster - edit)
"Slap In The Face (2021 remaster)
"Long Distance" (2021 remaster - alternate guitar version)
"Crazy Doctor" (2021 remaster - On The Prowl outtake 1990)

CD3 - drum oriented demo
"Down 'n' Dirty" 
"Playin' Games" 
"Love Toys" 
"Never Again" 
"Deadly Player" 
"Take It or Leave It" 
"Girl" 
"Long Distance" 
"In The Mirror" 
"Sleepless Nights" 
"Find A Way" 

DVD - Live Loudest At The Budokan '91 - 2021 Lacquer Master Sound Version
"Love Toys"
"Take It Or Leave It"
"Never Again"
"Sleepless Night"
"Down N' Dirty"
"In The Mirror"
"You Shook Me"

Az 'On the Prowl' - ahogy azt a tracklista is mutatja - elsősorban korábbi Loudness-dalok újrarögzített változatait tartalmazza; csak az eredeti album első három száma számított annak idején újonnan szerzett nótának. A régi dalok eredeti, japán nyelvű változatát az eredeti énekes, Minoru Niihara írta; Vescera pedig kifejezetten e kiadvány kedvéért alkotta meg a szöveges angol nyelvű változatát.