The Negative Effects of Game Addiction_Body Paragraph 2 Next, game habituation causes change in brain function. In recent study performed in Belgium, gamers’ have bigger ventral striatum, which is also called as reward hub, than non game users. It means that getting out of playing game is really hard for gamer. To maintain their excited brain condition, heavy game users become more obsessed about games, so they often experience abstinence symptoms when they have to fulfill duties like work or assignment. Attention deficiency is a suitable example to describe how the game addiction can appear in the way of abnormal function in human brain.