2 Games in 1: Scooby-Doo! - Mystery Mayhem + Scooby-Doo and the Cyber Chase ROM Download for Gameboy Advance (GBA). 2 Games in 1: Scooby-Doo! - Mystery Mayhem + Scooby-Doo and the Cyber Chase game is available to play online and download only on Roms Games. 2 Games in 1: Scooby-Doo! - Mystery Mayhem + Scooby-Doo and the Cyber Chase ROM for Gameboy Advance download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.