Safe Place is an environment-based game, a setting whose details and surfaces users explore, discovering and surfacing new aspects. It's a gentle game. Should be fine for kids.
Like Flyguy, the rules, ethos, and flavor of this game are not goal-driven. There aren't immediate threats demanding quick responses. It's not about suspense, but suspending the assumption of following a clear narrative line. It's a form of the Daoist free and easy wandering.