Rockstar Games parent company Take-Two has filed for a US trademark on "City Stories", indicating further interest in the Grand Theft Auto side series.
The application filed on May 15 lists Liberty City Stories and Vice City Stories as related trademark properties. The games, first released in 2005 and 2006 respectively for PlayStation Portable, each depicted new campaigns taking place in settings pulled from previous GTA locations.
Rockstar Leeds led development on both titles, as well as 2009 Nintendo DS title Grand Theft Auto: Chinatown Wars. Aside from mobile ports of Grand Theft Auto III and Grand Theft Auto: Vice City, no handheld versions of GTA have been released since then.
The trademark filing could be related to a compilation of previously released titles, or it may just be a proactive measure on Take-Two's part. It may also be related to the new-gen console game Rockstar is working on for release by March 2015.
It has long been rumoured that Rockstar plans to release a PS4 and Xbox One version of GTA 5, which has shipped 33 million units on PS3 and Xbox 360. However, the company has largely refused to comment on the possibility of a new-gen release for the blockbuster open-world game.