The premise is that shortly in the future people will be participating in games in which they control other people like puppets via a neural interface. One of these games is called Society, in which people do whatever they want. The most recent form of entertainment is "Slayers", which pits convicted murderers against one another. If they survive for 30 games they are granted freedom, but no one has ever survived to 30. That is, until Kable (Gerard Butler) came along. The billionaire who came up with all of this is Ken Castle (Michael C. Hall of DEXTER) and they guy is out of control. When in "fight mode" Kable is controlled by a seventeen-year-old named Simon, who he can communicate with. When things get out of hand and Castle tries to kill him, he gets Simon's help to escape. There's also a parallel story about Kable's wife, Angie (the wooden Amber Valletta) who works as a puppet in Society. Their child was taken away from them when Kable was arrested for murder.
Although there is plenty of violence and cgi gore, this movie is an utter mess. There are even two writer/directors, who cancel each other since it seems as if there were no writers or directors. The movie is an aimless mishmash with pointless action scenes and zero characterization. And Lloyd Kaufman has a five second cameo for some reason.
GAMER is a complete bore. Your time is much better spent watching either DEATH RACE movie.