The Nintendo DS's hardware is capable of rendering 2048 polygons in a single frame. There is an imgur album here detailing progress on the demo, and a build server if you'd like to download (very incomplete) development builds.
It is inspired by the Pikmin series by Nintendo, which premiered on the Nintendo GameCube. Pikmin NDS (also called Pikmin DS) is a tech demo that runs on the Nintendo DS that pushes the hardware to its limits.