Zone of the Enders Game System: Sony Playstation 2 Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Zone of the Enders ================== (submitted by: Robbo) Unlock extra options: Complete the game on any difficulty level with rank D or above to enable the versus option on the main menu. Complete the game a second time to unlock the remaining two orbital frames and two battle levels in versus mode.