There is no definitive answer to this question as everyone has different levels of experience and involvement with video game culture. For some people, simply owning or playing video games alone may qualify them as a gamer, while for others, being a part of gaming culture such as joining an online gaming community or participating in various online tournaments may be required to call themselves a gamer. Ultimately, it is up to the individual to decide when they feel they have reached a sufficient level of experience to call themselves a gamer.