Cheat mode: Press Start to pause game play to display the "Fortress of Solitude" menu. Enter one of the following codes at this menu to activate the corresponding cheat function. A sound will confirm correct code entry. God mode: Press Up(2), Down(2), Left, Right, Left, Right, Y, X. All power-ups: Press Left, Y, Right, X, Down, Y, Up, Down, X, Y, X. All unlockables: Press Left, Up, Right, Down, Y, X, Y, Up, Right, X. Unlimited city health: Press Y, Right, Y, Right,, Up,, Left, Right, Y. Bizarro in Free Roam mode: Press Up, Right, Down, Right, Up, Left, Down, Right, Up. Fly to the marker at the top of the GNN building to change to Bizarro. To change back to Superman, go to the marker at the other end of Metropolis.