How does the super mario galaxy movie differ from the video game?

The only verified information provided concerns Bowser, the main antagonist in the Mario franchise. No source confirms that a Super Mario Galaxy film has been produced, released, or announced. Consequently, it is not possible to compare or identify differences between a non‑existent movie and the existing video game. Without evidence of a film, any discussion of plot, characters, or stylistic changes would be speculative and is therefore omitted.