Game Points (GP), also known as credits, is the in-game currency used in Crossfire.
Players can exchange GP for weapons, items, characters and black market GP crates. GP can also be used to repair weapons.
Players earn a variable amount of GP per game they complete, depending on their in-game performance, however much of that reward usually has to be spent on repairing weapons. Other ways to receive GP are daily missions, badge level-up rewards, rank level-up rewards, events and black market crates. With the newly released Special Mission and Attendance System, it's possible to get a lot more GPs just by playing every day - in total, players can get 60.000 GP per month if they login and play everyday, and make sure that they play at least 60 minutes per week.
In some servers, GP can also be "purchased" by buying a set item that upon purchasing will give players GP in addition to that item.