Fireboy and Watergirl is a popular series of online cooperative puzzle-platform games developed by Oslo Albet. The games feature two characters, fireboy and watergirl, who must work together to solve various puzzles and navigate through different levels filled with traps and obstacles. Each character has unique abilities and weaknesses:
- Fireboy can walk through fire and lava without being harmed but cannot touch water.
- Watergirl can safely move through water but is harmed by fire and lava.
Players control both characters simultaneously or with a friend, using teamwork to solve puzzles that require precise movement, timing, and collaboration. The series includes several installments, each set in a different location with unique themes and challenges, such as temples, forests, ice caves, and light temples.