Gamers-Haze is typcialy a feeling one gains after countless hours of gaming. This is usually identified with a feeling of "offness" with reality. Getting the "newly found" real world confused with what happens in the "game world". Thoughts also tend to come at a slower pace, and solutions to problems are often solutions that would be in the video game.
I just spent the last 16 hours playing counter strike source. My gamers-haze is so bad right now this guy at the mall was pissing me off and I just wanted to punch out a headshot or two on him.