If you loved Mega Monster Battle: Ultra Galaxy Legends The Movie, try Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders
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

Mega Monster Battle: Ultra Galaxy Legends The Movie
→
Try this next

Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders
What they share
Both films are directed by Koichi Sakamoto, and they both carry the foreign gem, playful, uplifting mood tags, and they sit in Action / Adventure / Science Fiction territory. If that's the register that drew you to Mega Monster Battle: Ultra Galaxy Legends The Movie, the second film will land in a comparable space — through a different lens.
foreign gemplayfuluplifting
What Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders is
You're menaced by a Pac-Man virus outbreak. Doctors seize a corporation in a Proto Gashat heist. But returning Riders rally to your cause. Sakamoto's picture has the courage of its convictions; it dares to suggest video games are now old hat.