Pause the game and then highlight the given choice on the Options menu and enter the following code. When a code is accepted, a confirmation message flashes at the center of the screen, behind the Options menu.
| Effect | Code | 
|---|
| Acquire all Runes (when touching Rune on map E1L7)
 | Highlight Customize Controls, then press R, Z, L, X, Y, L, R, Y, L, R.
 | 
| Acquire all weapons and maximum ammo for each
 | Highlight Customize Controls, then press R, X, L, Z, L, R, Y, L, R, Y.
 | 
| Alter Analog controller setup/functions
 | Highlight Customize Controls, then press R, R, L, X, Y, Z, X, Y, Z.
 | 
| Begin again on current map, with original status
 | Highlight Reset To Defaults, then press R, L, X, Y, Z, R, L, X, Y, Z.
 | 
|  | Highlight Music Volume, then press R, L, X, Y, Z, R, L, X, Y, Z.
 | 
|  | Highlight Music Volume, then press R, X, L, Z, L, R, Y, L, R, Y.
 | 
|  | Highlight Customize Controls, then press R, L, X, Y, Z, R, L, X, Y, Z.
 | 
|  | Highlight Auto Targeting, then press R, L, X, Y, Z, R, L, X, Y, Z.
 | 
| Normal difficulty setting
 | Highlight Music Volume, then press R, R, L, R, X, Y, Z, X, Y, Z.
 | 
|  | Highlight Customize Controls, then press R, Y, L, Y, X, Y, Z, X, Y, Z.
 | 
| Some player weapons fire enemy ammo type (varies by map)
 | Highlight Auto Targeting, then press R, R, L, R, X, Y, Z, X, Y, Z.
 | 
| Toggle player's immunity to gravity on/off
 | Highlight Lookspring, then press R, R, L, R, X, Y, Z, X, Y, Z.
 | 
| Toggle use of 5-grenade rocket warheads on/off
 | Highlight Auto Targeting, then press R, X, L, Z, L, R, Y, L, R, Y.
 | 
|  | Highlight Customize Controls, then press L, R, L, R, Z, Y, X, X, Y, Z.
 | 
| Warp to new map (from START map, or with 4 Runes)
 | Highlight Reset To Defaults, then press R, R, L, R, X, Y, Z, X, Y, Z.
 |