For the enemy's in the game iv decided to go for a robotic/Future theme for my enemy's. For example I looked at transforms, the green lighten out of spider man and the iron giant because it they gave me inspiration for my enemy's in my game.
For the background and platforms within my game. I wanted a city view for example in my look down shooter game I decided to have the characters flying over a busy city full of buildings, cars and people so I looked at locations such as new york city or games like spider man and iron man which is based in a city and can walk on buildings etc. Im debating whether to have a city such as the one in the top right corner which is neat, bright and busy or to have a more distroted city as my background which will have burning buildings etc which I could then have platfroms with a brick effect almost as if the buildings roof's have flew off into the sky.