According to ESRB, this game contains: Animated Violence
Parents need not worry themselves over the game's content. The action is strictly old-time arcade shooting, and there's no adult content of any kind. This is one of those games that has seen better days on lesser platforms. Thankfully, Capcom's Giga Wing didn't receive a very wide release, so the game is pretty hard to come by. It's certainly not worth the trouble of searching for the game, much less the exorbitant $50 price tag charged by the few stores that carry it.
Giga Wing is challenging though (to say the least), so hardcore shooter fans might want to pick this one up.
Casual gamers will probably be overwhelmed by Giga Wing's confusing action and relentless difficulty.