City Interactive has announced that Sniper: Ghost Warrior has sold over a million copies worldwide across Xbox 360 and PC.
The game was one of the surprise hits of 2010, breaking into the Top Ten in its first week of release in July.
"A lot of hard work and dedication by the entire City Interactive team went into the development of Sniper: Ghost Warrior, so we are understandably pleased about the worldwide success of the game," City Interactive CEO Marek Tymiński stated.
"This success is the perfect backdrop to reveal details about some of the fantastic games that we currently have in our development pipeline, including the sequel to Sniper: Ghost Warrior and a couple of unannounced projects."
A "100 per cent uncut" version of the game is also due for a release this year on PS3. City has also promised "new promotions and lifecycle pricing for the game" to extend its shelf life.
A sequel to the game powered by CryTek's CryEngine 3 is currently in development.