Fallout 4 and Skyrim game director Todd Howard teases Bethesda's next mobile game, also revealing that the company was 'ecstatic' when Fallout Shelter was so successful.

Despite only releasing one mobile game, Bethesda has found huge success in the mobile gaming space. Its post-apocalyptic spin-off Fallout Shelter is the most played Fallout game ever and it made over five million dollars in just two weeks of availability, despite the game not having been promoted at all before launch. At one point Fallout Shelter even overtook King's mobile juggernaut Candy Crush Saga in terms of revenue.

Because of this, it came as little surprise when Bethesda announced plans to make more mobile games. Now, it seems as though fans will get to find out more about its upcoming titles soon, according to Fallout 4 and The Elder Scrolls V: Skyrim game director Todd Howard. Speaking to GameSpot, the developer confirms that "we do have another mobile project game that we thought about for a while," adding that "based on the Shelter experience, we're kind of rolling on something new."

The developer also says that the Fallout Shelter team was "ecstatic when it was so successful" and that the reaction "kind of blew us away." Howard also reveals that the mobile game still has a "pretty active player base," though undoubtedly with Fallout Shelter coming to Xbox One, Bethesda may see those already decent active player figures increase even more.

Unfortunately, it's unclear exactly what this mobile game will offer, though many fans will hope that Bethesda's next title will have significant post-launch support. Fallout Shelter has received major updates, including ones that bring the festive cheer and ones that add massive new gameplay features such as quests and faction-based room themes.

Because of this, players who have had the free to play game downloaded since launch have been full of praise for Bethesda's efforts in keeping the use base constantly engaged with new things to do. Players have also praised the game's microtransactions and how the company doesn't 'paywall' content off, and many will be hoping that if Bethesda's next mobile game is also free to play, it will follow suit.

During the interview, Howard did not confirm when Bethesda would lift the lid on this new mobile game. However, it seems likely that the game will be revealed during the just-announced Bethesda E3 2017 press conference. A sequel to Wolfenstein is also expected for its annual games showcase, and so it sounds as though the company could be preparing to seriously impress its fans come E3 2017 in June.