If there was a rating for the highest form of gaming addiction, I would belong in that group.
Stage 1: Not an addiction. Plays games on a mild occasion
Stage 2: Plays games to blow off steam, usually plays lots of games when stressed like women eating icecream. This can become problematic but this depends on the person.
Stage 3: Thinks about games sometimes and plays it occasionally. But this is small signs of possible addiction in the future. Some may think thinking about games is less addicting sign than what Stage 2 shows but this is actually a very big step towards addiction because it leads to creative thinking about games. This stage describes how children can be effected with gaming in the future.
Stage 4: The achiever. Needs to get the achievements and perfect the game in all ways. Though I would say Stage 3 can still get worst than this. The achiever can care less about the integrity of the game but it's still an addiction nonetheless. Stage 4 types however can still be somewhat sociable but not fit in the cred of what people consider normal social behavior. Many times an achiever does this to get the approval of others. This starts meandering into online gaming since there they can show off more.
Stage 5: The dreamer. This is possibly the worst stage of gaming addiction. The dreamer is someone that puts all his achievements into the game, his creativity is expounded into the gaming. Though his creativity is great and can be used for greater things in life he wastes it on the game. The dreamer likes to imagine what would make a better game and such. The dreamer can survive in real life if he becomes a game programmer or such but if he doesn't he will fail at life. Dreamers are typically in the format of MMORPGamers and like having games with lots of customization options. I'm stage 5.
I'm sorry I guess my "creativity" or whatsoever had me make those stages.... but I'll just say I'm a 29 year old with nothing going on his life stuck on some serious MMORPG gaming addiction. I want to get into grad school but I don't even have the faintest idea of the GRE and a lot of other requirements to get in. My GPA is horrible, the only work I've ever done with minor lab internships and I don't know what I'm going to do. I don't have any friends since I burned the bridges to many and I'm in need of help.