Actors Colin Farrell and Paula Patton are reportedly under active consideration for the lead roles in Warcraft, the film adaptation of the Warcraft videogames to be directed by Source Code's Duncan Jones.

According to Deadline, Patton "is negotiating for a lead role" and "another lead has been offered to" Farrell. Patton, who played IMF agent Jane Carter in successful action film Mission Impossible – Ghost Protocol alongside Tom Cruise, is seen as a Hollywood up and comer, while Farrell, the Irish actor best known for cult films such as In Bruges and Intermission, has attempted to find success with a string of mainstream roles in films such as Total Recall, Miami Vice and Alexander.

Warcraft – the movie – has been in the works since at least 2006, when Blizzard, the company behind World of Warcraft, announced it had agreed a partnership with Dark Knight Rises backers Legendary Pictures. Oz the Great and Powerful director Sam Raimi was initially attached to the film, but he dropped out in 2012 and was replaced by Jones earlier this year.

Based on the series of immensely succesful Warcraft games – which first appeared in 1994, and saw its popularity enhanced by the 2001 MMORPG (massively multiplayer online role-playing game) World of Warcraft – rumours suggest the movie will be based on the orcs v humans template of the early Warcraft games. Filming is expected to begin early next year.

• News: Duncan Jones to direct World of Warcraft movie © Guardian News and Media 2013