How many bioshock game series are there?

Resource system:

Money: Players can collect money from enemies, drawers, safes, etc. Buy props or ammunition from vending machines; The maximum carrying capacity of money is 500 yuan. Besides, money can also be used for slot machines and divination machines.

Adam: To buy the resources needed for skills and strengthening abilities. The way to get Adam is to liberate or extract the little sister with Adam culture. The former gets less but the little girl returns to normal, while the latter gets more but the little girl will die. Since every little sister is protected by Da Die, the player will have to fight Da Die to get Adam.

Research point: After the player gets the camera, he can shoot all kinds of enemies and get the research point according to the evaluation of shooting. After reaching a certain level, you can increase the damage caused by Jack to such enemies, or gain special skills, increase vitality and the upper limit of EVE.