If you loved Shanghai Fortress, try Dallos
A bridge between a film you've already seen and one most people haven't. Dallos has roughly 9.7× fewer votes than Shanghai Fortress — 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
Theysit in Science Fiction / War territory. If that's the register that drew you to Shanghai Fortress, the second film will land in a comparable space — through a different lens.
What Dallos is
You live on the Moon, circa 2001, as a colonist chafing under Earth's cruel rule. But lunar rebels keep pushing back, and then a monolith appears. Oshii's OVA anticipates Ghost in the Shell, though its politics stay messy.

