Titanfall 2 may not be the last game in Respawn's shooter series. Founder and CEO Vince Zampella told IGN that, while the studio may not have specific plans for a trilogy, the hope is that Respawn can work on more games in the series after Titanfall 2 and the mobile games.

"We don't have necessarily a trilogy in mind. You always hope when you create something that it's embraced and that people will love it for generations to come," he said. "I hope we do more of it. We probably plan to do more--as you know, we have the mobile games as well. I would like to see the universe live on. I think it's very expandable. I think there's a lot we can do with it. There's a lot of great ideas floating around here [at Respawn] that I would love to see come to life."

The first Titanfall mobile game, Frontline, is a free-to-play card game for iOS and Android. It comes out this year, as part of Respawn's partnership with mobile gaming giant Nexon.

Also in the interview, Zampella was asked if the 2014 original Titanfall might ever come to PlayStation 4. Don't count on it. "I believe we are limited in our ability to do that," he said, potentially referencing the exclusivity deal the game's publisher has in place with Microsoft.

On the subject of the relationship between Respawn and Microsoft, Zampella said Microsoft was a great partner and that Titanfall would not have existed without them. At the same time, Zampella said he thought Respawn, at some point, would be able to put Titanfall on PS4--but that couldn't happen.

Titanfall 1 was released only on Xbox One, Xbox 360, and PC. The sequel, which comes out on October 28, will be available for Xbox One, PC, and PS4.