Fireboy

Fireboy and Watergirl is a cooperative puzzle-platform game. Fireboy can be moved by using the arrow keys and Watergirl can be moved using the WASD keys. Fireboy can only go through lava whereas Watergirl can only go through water. If either Fireboy or Watergirl touch the opposite element, they will die and the level will have to be restarted. Green acid can kill both characters. Red and blue diamonds can be collected by players, and mechanisms like levers and buttons will have to be operated carefully in order for both characters to complete the level. Once a level is completed, a chart depicting how many diamonds were collected throughout the level will be revealed to the player(s), as well as their rank.