Use the following level generator codes for European version of the game:
257462320: Small Map
1585104494: High Altitude map
221350867: 4 submarines
These codes should be used for North American version:
doggystyle: Lunar map, spaceship & laser gun
Jamie Finegan: Large island level
finalfantasy: Small winter island
steller: horror style map
spire: Low map with 2 blimps
sugarcult: Large winter map
slipknot: Pirate map with airship
7873155: English map with bridges
90210: Some hour glasses and islands