Regarding the game itself:
- Broken Base: This is probably the best way to describe the multitude of divisions of fans and the subdivisions of these divisions.
- Catharsis Factor: One of the reasons the game is addictive.
- Gameplay Derailment: Nationstates stands out as a franchise whose methods of playing the game could almost all be considered forms of Gameplay Derailment. Perhaps the most extreme example is the interregional combat system that players have improvised out of World Assembly elections, regional ejection mechanics, and huge amounts of Meta Game coordination. Word of God says that the creator didn't anticipate this but still finds it immensely entertaining.
- Good Bad Bugs: A very common one, in the form of (example): "'This raises an interesting issue,' says Elizabeth Winters, your brother."
- True Neutral: When your nation is categorized as a "Inoffensive Centrist Democracy". (it's in the middle when it comes to personal, political, and economic freedoms)
- Wild Mass Guessing: What the tagline for the news item "REGIONS WILL FALL" have resulted in.
Regarding the roleplaying section of the game:
- Ass Pull: Surprisingly fitting trope to start with.
- Even Evil Has Standards: Murray the Evil Skull. He even calls this trope by name. That said, though, the only really evil things he does are put curses on people and sing country music.
- Leeroy Jenkins: The Ryou Black Islands and all his previous incarnations.
- Magnificent Bastard: The forum moderators are equal parts respected and hated.
- Mary Suetopia: Somewhat averted by the game itself, which attempts to indicate that all nation types have their drawbacks, but often played painfully, painfully straight in roleplay.
- Memetic Badass: Some of the older and more respected roleplayers are this.
- On the General (ie off-topic) forum, Lunatic Goofballs has been practically deified. The mods responded by making him a mod.
- "Stop Having Fun" Guys: A recurring issue over just about every kind of role playing you can imagine, but most often seen from players who yell at people using Rule of Cool things.
Regarding Forum 7, the casual off-topic place:
- Memetic Molester: Grittonia, but he is loved all the more for it.