  Video-game projects are notorious for having day-one bugs, no matter how big
their budget or team size. The quality of a game is essential for its success.
This quality could be assessed and ensured through testing. However, to the
best of our knowledge, little is known about video-game testing. In this paper,
we want to understand how game developers perform game testing. We investigate,
through a survey, the academic and gray literature to identify and report on
existing testing processes and how they could automate them. We found that game
developers rely, almost exclusively, upon manual play-testing and the testers'
intrinsic knowledge. We conclude that current testing processes fall short
because of their lack of automation, which seems to be the natural next step to
improve the quality of games while maintaining costs. However, the current
game-testing techniques may not generalize to different types of games.
