BackgroundiSniper is the most realistic sniper game your are looking for.
The story begins when a group of terrorists broke into MASQ Corp. HQ and hold hostages. Your squad, the best anti-terrorist unit in the world, is called to take control of this emergency situation.
However, this is just the top of an iceberg. A long and tough path is waiting for you and your team.
Hold your breath, seek, aim and FIRE!