The Next Game Idea

After a brainstorming session in class we have Started working on new game ideas and game concepts. The main theme is Tropical Island and we had to come with ideas and different words that make us think of tropical  islands. Some of the words that i thought of were: Heat, Stranded, Dangerous,and survive.

These words will be the some of the main elements and themes that i will use for my game. I would like to design a real time strategy survival game. 

Using some big name games as some example i would like to have the look of the Age Of Empire Series.
but the feel of a survival game like Rust Or Day Z.