Game Analytics is an important research topic in digital
entertainment. Data log is usually the key to understand players’
behavior in a game. However, alpha and beta builds may need a
special attention to player focus and immersion. In this paper, we
propose t he us e of player’s focus detection, through the
classification of pictures. Results show that pictures can be used
as a new source of data for Game Analytics, feeding developers
with a better understanding of players enjoyment while in testing
phases .