Someone who is obsessed with video games is often referred to as a "gamer addict" or simply a "gamer." It's essential to note that while gaming can be a fun and enjoyable hobby, an obsession with video games to the detriment of other important aspects of life can be a sign of a gaming addiction or unhealthy behavior.
Gaming addiction, also known as internet gaming disorder, is a recognized mental health condition characterized by excessive and problematic gaming behavior that negatively impacts various areas of a person's life, such as work, school, relationships, and physical health. If someone's gaming habits are causing significant distress or interfering with their daily functioning, seeking professional help from a mental health professional is advisable.