Let's face it, there is just not enough computer games. And who is better at coming up with new things than us? If you have any ideas on this topic, please drop them here.
"I'm a genius!" (strategy, suitable as a flash game)
It's true, you are smarter than the rest of the humanity. You were content with exploring philosophical mysteries, until your superior intellect alerted you to a great danger nobody else has noticed. They are a silly race, but you feel for them (plus there is the risk of your own premature death). You really want to help, but nobody believes you... and they are incompetent anyway. You have to take over the world for its own good.
Gameplay: featuring scenarios from zombies to alien attacks, the player has to take control of cities through any means necessary (from being a benefactor, through bribing and propaganda, up to eliminating opponents), that differ in their effectiveness, how quickly they influence things and can occasionaly backfire. So it is an economical-combat simulation where you take over existing resources and fight your enemies.
Meanwhile, the cities will come to realize the threat and start to defend themselves. They can prevent some of the damage, but tend to use the wrong strategies and attack friendly units. It takes a genius like you to make it right.