Any keyword can be made Extreme by placing an X in front of it. For example, if a city had a huge airport or lot of airports, it would get the keyword xairpot .

Some of the less obvious keywords are defined below.

• art - City resemble a piece of art
• blue - City is mostly blue (water)
• brown - City is mostly brown (dirt)
• cheated - It is obvious the Mayor used cheats to make the city
• chia - City is void of sims. Grow when you take it off pause
• darco - Dark Arcology
• desal - Desalination Plants
• emptyrci - RCI (Residential, Commerce, Industrial) indicators are neither positive or negative
• extreme - Very extreme in some way
• farco - Forest Arco
• flat - The terrain is very flat
• floating - The city appears to be floating
• fullrci - RCI (Residential, Commerce, Industrial) indicators are maxed out
• green - The city is mostly green (trees)
• grey - The city is mostly grey
• hilly - The city is very hilly
• larco - Launch Arco
• metro - The city is a big Metropolis like New York city
• micro - Microwave powered
• parco - Plymoth Arco
• pump - Water Pumps
• pyramid - Terrain is build like a pyramid
• raised - Raised Tiles used
• solar - Solar Powered
• steps - Terrain looks like steps
• supersim - Super Sim is in the city
• symetrical - City is symetrical
• trapped - One or more airplanes are trapped in between Arcos
• unfinished - The city is not finished
• wind - Wind Powered
• yellow - The city appears to be mostly yellow
• zoning - The zoning is special