Gate of Thunder Game System: NEC Turbo Duo Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Gate of Thunder =============== Level select: Press I, II, II, I, Select, I, II, I, II, Select, Select, Run at the title screen. A "Stage" option will now appear on the configuration menu. Bomberman mini-game: Press Up, Right, Down, Left, II at the 3-in-1 disc menu. A sound will confirm correct code entry before the Bomberman title screen appears.