Bonnie Ross, head of game development studio 343 Industries, said the company is planning to stop using numbers for future "Halo" sequels, Game Spot reported.

This probably means that the last game that will feature a number is "Halo 5: Guardians."

"At some point, we do want to stop numbering. Especially on Xbox One," Ross said. "If I had my druthers, we wound't have called 'Halo 4' that - we really look at the game as the start of where [Master Chief is] going."

"At some point we need to drop the number and still let you know you've got a big story coming," she added.

Fans of the series are well aware that numbered "Halo" games heavily feature the main protagonist Master Chief. Ross noted that even without a number, future "Halo" titles may or may not feature the character's story, according to Gamer Headlines.

"It might still be a Master Chief story," she said. "I'm just saying, at some point we don't want to be 'Halo 17,' when Master Chief's like 80."

"We're not 'Final Fantasy,' we can't do it," Ross added. So we kind of open that door - it doesn't mean it'll be a Master Chief story or not. That's something for us to decide in the future."

"Halo 5: Guardians" will be released in 2015 while the upcoming compilation "Halo: The Master Chief Collection" will debut on Nov. 11, Tech Times reported.

Aside from a remastered quality, Ross noted that the "Collection" will also introduce a new plotline.

"It's bounded by a new prologue and epilogue, also done by Blur," she said. "As you saw in the trailer, it sort of teases that there's a potentially new, mysterious threat - something that the arbiter was talking about. You're going to see that pay off in the epilogue."

Ross added that the new elements of "The Mater Chief Collection" will serve as a prelude to the story of "Halo 5: Guardians."