Gas Exchange

The purpose of respiration is the exchange of gases between the body and the external environment. O2 is constantly obtained from the outside world for the oxidation of nutrients in the body, thus providing the energy needed for the body's metabolism and expelling the CO2 produced by oxidation in the body.

Deep and slow breathing is more effective than shallow and fast breathing within a certain range because shallow and fast breathing alveolar ventilation is less than deep and slow breathing alveolar ventilation. Moreover, deep breathing relaxes people and eliminates anxiety and stress.

So I designed this top-down shooting game where players use oxygen as a weapon to eliminate the carbon dioxide produced by breathing and the potential psychological pressure. Players can use the shallow breathing and deep breathing skills to cause range damage, while restoring a certain amount of oxygen bullets. Shallow breathing will produce additional carbon dioxide, while deep breathing will not, and the damage will be higher.

Use WASD to move and the left mouse button to fire bullets.