If you loved A Turtle's Tale: Sammy's Adventures, try Fly Me to the Moon
A bridge between a film you've already seen and one most people haven't. Fly Me to the Moon has roughly 3.6× fewer votes than A Turtle's Tale: Sammy's Adventures — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Ben Stassen, and they both carry the cozy, playful mood tags, and they sit in Animation / Family territory. If that's the register that drew you to A Turtle's Tale: Sammy's Adventures, the second film will land in a comparable space — through a different lens.
cozyplayful
What Fly Me to the Moon is
Because what space missions need is tiny uninvited guests. Three houseflies sneak onto the Apollo 11. It somehow manages to be cute.

