Entry location: Password screen that is very hard to miss
This is not the only cheat code, but NARPASSWORD (got that) is arguably the best cheat code ever.
Infinite life (wooo)
Freeze beam (use them for those pesky metroids)
Screw attack (basically a force field as you jump)
Death traps that you can't get out of (forever)
Can't change or gain new weapons
People think you have to have codes to beat a game
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