Welcome to Sindome. There are a few things about the atmosphere of the place we call "The Dome" that should be noted.
The general idea is that this is a cyberpunk reality. This isn't cyber-fantasy, hack-n-slash, real reality, but cyberpunk. Think William Gibson, Blade Runner, "The Matrix", etc. While a high level of creativity is encouraged, the "idiom" of the dome as it were is a gritty, harsh, somewhat technologically dependent not TOO distant future.
Corporate controls, Big Brother, Violence, hopelessness, despair. Classism. The haves want nothing to do with the have-nots, seeing them as expendable resources. The have-nots resent the haves for what they view as their hell on earth. The value of money has been reduced, and jobs pay incredibly small wages. Those that don't usually involve agreeing to sell your soul to Corp control, or agreeing to let Big Brother monitor your life.
Officials are corrupt. Government is run on the principle of the golden rule...he who has the gold, makes the rules. The police system has permission to judge on sight for any offenses, and stops the questionable at any opportunity.
If life is so bleak, why is any one still living? There is the occasional bright spot...getting drunk in any number of bars, hanging out with friends, meeting new people, falling in love, finding a sweet job, or...using your talents for criminal and nefarious purposes without being caught. The opportunities are endless, as long as you remember that there is always someone looking over your shoulder, always someone waiting to catch you breaking the law, and always someone out to get you.
Certain jobs, like those at corporations, as well as where a character lives, make a character a 'corpie'. Certain jobs (or lack thereof) as well as where someone lives make a character a 'mixer'. Not every job on the higher levels (Gold, Green, Blue) will make you a corpie. There are service jobs, and those jobs are done by the lower class.
TLDR on Theme
* Read the timeline on the website. Our universe diverges from the real world at the end of 1999
* No modern day companies happened
* No modern day events happened
* No modern day slang
* No modern day memes
* Use cyberpunk slang
* Use game history (post 2085) that you learn in character or on the wiki
For examples of staying on theme as well as what NOT to do: http://sindo.me/HkqNY7nXM