Answer the following question, but give the rationale first. Was the original Metroid groundbreaking for its polygons?
Metroid was a 1986 video game released on the Nintendo Entertainent System. Polygons were a graphics style that became prominent in the 1990s on the Sony Playstation. Nintendo Entertainment System games had a 2-D pixel-art style. Metroid is hailed as being the first mainstream game with a playable female protagonist. So the final answer is no.