I was just thinking about how it was odd to me, starting with Metroid Prime on the Gamecube that future Metroid games mostly had the word "Prime" in their title. Like why did Metroid Prime pinball have Prime in the title and not just called Metroid Pinball? Was it because of re-used art assets from Prime 1 or something? Perhaps it takes place during, right before or right after the storyline in Metroid Prime? Just speculation. Why didn't Metroid the other M have Prime in it's title? There was also Metroid Prime Federation Force that was a Prime-Branded title that was quite different than Prime 1-3. I feel like I just don't know enough about Metroid lore to understand the titles.