  The current study investigated the gaze movements of FPS gamers in actual
game environments. We developed a low-cost analysis tool using Python to
identify gaze movements in real-world gaming environments. In Experiment 1, 11
middle-skilled and ten high-skilled FPS gamers performed a task under the
experimental condition. Gaze position, reaction time, and accuracy were
calculated during the task. Reaction time exhibited a significant positive
correlation with task accuracy, suggesting that speed and accuracy were
associated with higher game performance. The middle-skilled gamers had a
significantly wider horizontal gaze distribution than the high-skilled gamers,
and gaze distribution and reaction time showed a negative correlation. These
results suggested that high-skilled players utilize peripheral vision during
gameplay. In Experiment 2, 15 middle-skilled and 12 high-skilled FPS gamers
performed an actual FPS game match. The gaze distribution, kill/death/assist
ratio (KDA), and percentage of gaze on game information were calculated. In
experiment 2, gaze locations in less important areas were positively correlated
with KDA. Thus, performance was determined by the important areas where the
gaze was focused rather than by the coordination of gaze position alone.
Therefore, a broader range of environments is necessary to comprehend the
superior performance of FPS gamers.
