Complex sentence: Action Replay improved on Game Genies functionality by adding an enable/disable switch and the codes, at the time, were in a more logical hexadecimal format compared with Codemasters obfuscated system.
Split into simpler sentences: Action Replay improved on the Game Genies' functionality by adding an enable/disable switch. The cheat codes, at the time, were published in a more logical hexadecimal format compared with Codemasters obfuscated system.