If you loved Lucy, try The Last Battle
A bridge between a film you've already seen and one most people haven't. The Last Battle has roughly 103.7× fewer votes than Lucy — 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 Luc Besson, and they sit in Science Fiction territory. If that's the register that drew you to Lucy, the second film will land in a comparable space — through a different lens.
What The Last Battle is
Mad Max meets Lord of the Flies. A lone survivor navigates a devastated world. Jean Reno menaces.

