Was the original Metroid groundbreaking for its polygons?
Let's be accurate as possible. Think before you answer.
no
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.

.

Final answer: no