
Cyber Nations is a browser based RPG. It is a text based game where you build your nation from the ground up, purchasing upgrades, waging wars, and trading with other nations. Currently, about 25,000 nations are in Cyber Nations. Logging in everyday just to collect taxes and pay bills can get sort of boring, and that's where alliances come in.
Joining an alliance provides your nation with protection. Alliances also help with game guides and trading forums. I personally belong to IRON, which used to be one of the strongest alliances in the game, but recently has fallen in rankings since our last lopsided war where we got pounded into the ground. Cyber Nations has an active and dynamic community, with forums that mimic the UN. You can rise to a diplomatic position within your alliance and form blocs with other alliances to attack your enemies. Some websites have their own alliances. There's the GOON alliance, FARK, and there used to be /b/, but they have been wiped out.
Don't let the fact that it's text based discourage you. I've been playing for 4 years, and I had never played a text based browser game before this. It can be addictive. And it's free.