Buy Fever: Fight the Fever PC key

Fever: Fight the Fever puts you inside the body's blood vessels, where you defend it from germs, viruses, diseases and other ailments. Sterilize invading enemies as they race toward you, manage the body's temperature and survive waves of biological threats.

Manage the body's defenses

The immune system is a fragile ecosystem. In response to threats, the body raises or lowers its temperature; if it becomes too hot, fever takes hold, while excessive cold causes hypothermia. Either extreme collapses the immune system and leaves the body unable to fight incoming enemies.

You can choose which threats to confront and learn which ones the immune system can handle on its own. Collect Cellular Residue from defeated enemies to create White Blood Cells (WBCs), which attack invaders, or take direct control of the circulatory system to flush them out. Red Blood Cells (RBCs) keep the blood flowing, help regulate body temperature toward an optimum level you choose, and can sweep away certain contaminants to give you more time to act.

Upgrade your blood cells

Spend Cellular Residue to increase the spawn frequency or quantity of either type of blood cell and improve their distinct abilities. RBC upgrades can make each cell change the body's temperature by a greater amount, while stronger WBCs deal more damage, so fewer are needed to defeat a given enemy.

Bosses and endless mode

Survive and repel the invaders while taking on multiple bosses. Defeating them earns Cellular Residue and raises your score in an arcade-style high-score chase. The fight continues after the bosses fall: endless mode brings more cleanup and steadily increasing difficulty as you try to stay healthy and reach higher scores.