While Undertale certainly isn't a horror game (there aren't any jump scares to worry about), it does feature some frightening moments that could scare younger children. Some areas of the game are accompanied by eerie music that could make younger players nervous, and the character design can be downright spooky.

For kids over the age of 6, the American Academy of Pediatrics says no more than 60 minutes on school days and 2 hours on non-school days. Kids under 6 should spend closer to 30 minutes. It's also appropriate for parents to know and approve the games their kids are playing. Avoid any games with graphic violence or sex.