So i am developing a new game on Unity,but i have no material,files

Try to come up with an overall goal for your game, and then go from there.

For example, if you want to make a game about how war is a terrible thing, suddenly kill a charismatic character.

>>378321
Mechanics first. Build things and be creative.

>>378321

Contemplate about the following questions:

> What did I always intend to develop?

(i.e. a jump-n-run? A First-person-shooter?)

> What did I always miss in other games of the aforementioned genre?

In business administration lingo this is called "Unique Selling Point" iirc)