If you loved Justice League vs. the Fatal Five, try Justice League: Gods and Monsters
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Justice League vs. the Fatal Five
→
Try this next

Justice League: Gods and Monsters
What they share
Both films are directed by Sam Liu, and they sit in Action / Animation / Fantasy / Science Fiction territory. If that's the register that drew you to Justice League vs. the Fatal Five, the second film will land in a comparable space — through a different lens.
What Justice League: Gods and Monsters is
You fight alongside altered versions of iconic heroes in a reality where they are framed for a violent act, but the truth behind the event threatens to upend everything, the film leaves viewers with a darker tone.