If you loved Armitage III: Poly Matrix, try Mobile Suit SD Gundam Mk III
A bridge between a film you've already seen and one most people haven't. Mobile Suit SD Gundam Mk III has roughly 5.3× fewer votes than Armitage III: Poly Matrix — 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 Animation / Science Fiction territory. If that's the register that drew you to Armitage III: Poly Matrix, the second film will land in a comparable space — through a different lens.
What Mobile Suit SD Gundam Mk III is
A collection of super-deformed Gundam shorts is certainly a thing that exists. The world of Gundam is re-imagined with short, comedic stories. It's probably best enjoyed by people already invested in the franchise.

