According to the ESRB, this game contains: Violence
Parents can rest assured that whilst the atmospheric, sci-fi settings are certainly creepy, they're offset by the game's largely non-stop action quotient. Besides, the aliens are more ugly than they are scary, in the same way that the violence is more slimy than it is gory. Although the game does revolve around weapon-based carnage, it's all framed within a harmless context of space fantasy.
Casual gamers need not worry, thanks to the game's allowance for swift and fairly easy progress.
More experienced gamers and fans of the series will be happy to discover that, upon completion, they can look forward to the challenge of playing an unlockable 'Hard' mode, as well as the original Metroid on which the game is based, before endeavoring to uncover every devilishly hidden item for that super-satisfying 100% completion rating.
One last word of advice: GBA gamers who are lucky enough to be blessed with an SP machine ought to try playing Zero Mission in the dark. It might feel a little silly at first, but it genuinely adds to the experience. Handheld games don't get much moodier than Metroid.
Deaf and Hard of Hearing gamers will be at no disadvantage throughout Samus' adventure, since all necessary information is displayed visually.
