Consensus among the kid reviews is: ok for 12/13+. That's how I
  felt about rated R movies when I was that age too. They're
  probably right: That's the age I watched all the horror movies
  that were rated R - but the rule always seems to follow: R
  movies are watched by the 12/13 yr olds. PG-13 are watched by 8
  yr olds. PG are watched by 5 yr olds and G are watched by
  grownups who are tired of language/sex/violence and just want a
  nice story. == Considering the character I'm not surprised.
  Pushing the envelopes. But - it's a Marvel character. They're
  gonna watch it. Parents of kids under 12/13 who bring their kids
  in to see it are not responsible. Above that age? Eh, depends
  but if they're fans, they'll just have to cover their own
  ears/eyes at the bits they don't wanna see. == Yeah - 5's too
  little. Nightmare city. Then again, the original Grimm's fairy
  tales were pretty rough and the older Disney movies were
  twisted. Even today, there was "Gravity Falls" on Disney XD. My
  10.5 yr old nephew LOVED it, as many kids his age. It's Y-11 so
  he's right in the market. But my 4 yr old niece was dreadfully
  scared of a lot of it and won't watch it. Y-11 for a good
  reason. == Yup - and parents of smaller kids are STILL going to
  ignore it thinking it's just a warped Spider Man. == They just
  had the final episode movie last night I think. The guy who made
  it was surprised Disney went for it because he only wanted to do
  a couple of seasons, and that's just what he did. Now he's going
  to do a show for Fox, although I'm sure he'll do the occasional
  Gravity Falls movie. Yeah, Bill Cipher. I know all about him. 4
  dimensional being that we can only see in 2 dimensions because
  we're in 3 dimensions, whose cousin was lost and he wants to
  find him.... yeah, heard allllllllllll about it throughout the
  lifetime of the show. Fed perfectly into the Illuminati meme
  stuff going around in that age bracket too so Disney's timing
  was good. == Love the artwork by the way - all of it. Did they
  get into Yo-Kai Watch yet? That's even more interesting
  demon-wise: genius idea for a show. It's Pokemon-ish but uses
  Japanese folklore where dead demons influence your every move in
  life. When you have to go to the bathroom? It's figgipop. When
  you forgot someone's name? It's another one. One nice feature I
  like about it is that you have to make friends with them or
  they'll leave, unlike Pokemon which is cock-fighting. == Kids
  that age are into cryptography, secret coded messages, stuff
  like that. I only saw two episodes of Gravity Falls 'cause I had
  to, but I could see why they get really into it. My nephew just
  started teaching himself sign language and is teaching two of
  his friends so they can communicate. I did the same kind of
  things with sign language and braille too at that age. Still
  love languages. Ah yes, FNAF - and the Creepypasta's. The
  Creepypasta's are downright poop in your pants scary. I suffered
  through one a year or two ago when my nephew was 8 that he
  wanted me to listen with him because he was scared... but it
  scared *me* too! lol. == Five nights at Freddy's, Gravity Falls,
  Minecraft, online RPGs like Roblox, Animal Jam, Illuminati,
  Creepypasta, games where you are trapped and have to survive
  with spooky music, JUMPSCARES (everything has a jumpscare),
  mangled robots.... yeah... all par for the course. == Yeah -
  they're all great games. I ran a Minecraft server from 2012-2014
  for him and had a blast. I'm still not that great at it (I built
  a scale model of my house in it and I like mining), and
  sometimes my nephew will drag me onto big public servers to
  fight. Terraria is also a great game - it's got some creepy
  stuff in it as well. I haven't played it in about two years but
  I heard they massively updated it. My nephew had me show him how
  to hack items in so he could have more powerful equipment. [it's
  the benefit and the drawback of being an old fashioned "whiz
  kid" - I can figure out how to do stuff]. Now he's hacking his
  own games and doing a little programming on his own. Kinda proud
  of him actually. Somewhere along the line, I became expert at
  the common interests of his age range: I wanted to be a step or
  two ahead of him so when he starts rattling on about something
  I'll know what he's talking about instead of playing catch up.
  == [and by 'expert' it means: I know 1% of what he's talking
  about, but enough to *seem* intelligent about it] ==