City Theme - Title theme for my game: Hearts of War. Link in my signature.
Try describing it a little - It should start out slow, and then build slowly. It should start with a lone piano, and then other instruments come in.
Mood and atmosphere - Somewhat depressing, but then it builds and becomes stronger, but still rather dark.
Any preferred key? - The one with 3 flats. I don't remember the names.
Major/Minor key - Minor
Preferred Time Signature - I prefer 3/4
Any legendary pokemon you can relate this theme to? - Not really. Maybe the weather trio, but barely.
Other - Nothing else really. The piano's melody should be the point where the rest of the piece is focused.