GunFu Fighter is an action game developed by Zhang Fan. Set in a world where humans are forced to wear masks due to toxic mercury vapor, the game follows a time control superpower agent who is investigating a church's involvement in the atmospheric pollution. The game is based on the ancient skill of Gun Fu, where the player can control the surrounding time and use the bullet time effect to analyze and predict the enemy's geometric distribution position. The game features a minimalist painting style that recreates movie-like fight scenes.

In GunFu Fighter, players can use multiple weapons to kill the most threatening enemy, and the key to victory lies in using the interactive environment to their advantage. The game also features a super slow-motion mode, which immerses players into the movie special effects scenes. As players progress through the game, they will find the Church's lost historical documents and uncover the Church's conspiracy step by step. Overall, GunFu Fighter is an immersive action game that offers a unique and exciting gameplay experience.