Deja Vu I & II: The Casebooks of Ace Harding ROM Download for Gameboy Color (GBC). Deja Vu I & II: The Casebooks of Ace Harding game is available to play online and download only on Roms Games. Deja Vu I & II: The Casebooks of Ace Harding ROM for Gameboy Color download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.