I'm not talking about those educational baby games, I'm talking about coming-of-age games, innocent adventures, and the like. What are some games you think are best played when you're a kid?
A few I think are...
Almost any LoZ game! There's tons of clever and interesting characters, environments, etc. without the gritty cynicism of other good large-scale games like Fallout, Dying Light, and the like. (not to say that I don't love both)
Far Cry 3, although it's a bit brutal (and naughty) to be a true "kid game". Teenagers are still kids, so I'm not gonna call this one out of kid-tier. Anyway, this game has a wide open world to explore, and focuses on the main character's growth from an irresponsible kid to a brave warrior. A modern equivalent of the fairytale-ish growing up stories.
Undertale! I don't really need to say much about this one. It's story-rich, engaging but devoid of adult content that would go over kids' heads.
Life is Strange. It's literally about the significant issues that go on in a kid's (well, once again a teenager's) life. It's one of the few games I've seen about childhood that can be taken seriously.