If you loved The Lego Batman Movie, try LEGO DC Comics Super Heroes: Batman Be-Leaguered
A bridge between a film you've already seen and one most people haven't. LEGO DC Comics Super Heroes: Batman Be-Leaguered has roughly 34.7× fewer votes than The Lego Batman Movie — 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.

The Lego Batman Movie

LEGO DC Comics Super Heroes: Batman Be-Leaguered
What they share
Theyboth carry the playful mood tag, and they sit in Action / Animation / Comedy / Family territory. If that's the register that drew you to The Lego Batman Movie, the second film will land in a comparable space — through a different lens.
What LEGO DC Comics Super Heroes: Batman Be-Leaguered is
Here's a film unafraid to ask, what if Batman begrudgingly had to team up with others? One of his nemeses imprisons the Justice League, leaving Batman to do the rescuing. He learns a valuable lesson, though probably not.