Hardcore gamer

A person who devotes a large portion of their time towards gaming and gaming variations. A hardcore gamer might often attempt to optimize their playing style, often by the use of gaming gear or mods/addons; this practice is often common for casual gamers, but to some lesser extent. "A casual gamer is someone who schedules the game around their life, while a hardcore gamer schedules their life around the game." -TotalBiscuit (a.k.a TotalHalibut; The Cynical Brit)