That's what a lot of the commentary I've heard about Splatoon has focused on.
Nintendo took a really popular (and good) genre, the team based shooter, and made it perfectly family friendly. Easy to understand, lots of fun, no exploding heads, no dismemberments, nothing objectionable.
It's been tried before, but not with the talent of Nintendo behind it. I remember playing the Nerf-branded UT game with my nephew many years ago, for example.
Nintendo took a really popular (and good) genre, the team based shooter, and made it perfectly family friendly. Easy to understand, lots of fun, no exploding heads, no dismemberments, nothing objectionable.