Although the campaign element of the game is turn-based, players can direct battles in real time. The interface and play are similar to earlier Total War titles. Players choose an 18th-century faction and set out to achieve domination over the known world through military force, diplomacy, espionage and economics. The Linux version was released, also by Feral Interactive, on 8 December 2014. The macOS version of the game was released by Feral Interactive on 10 June 2014. The game, which focuses on the early modern period of the 18th century, was announced at the Leipzig Games Convention in August 2007. The fifth installment in the Total War series, the game was released in 2009. Empire: Total War is a turn-based strategy and real-time tactics video game developed by Creative Assembly and published by Sega.