The only aim in Rust is to survive.
To do this you will need to overcome struggles such as hunger, thirst and cold. Build a fire. Build a shelter. Kill animals for meat. Protect yourself from other players, and kill them for meat. Create alliances with other players and form a town.
Do whatever it takes to survive.
“We are in very early development. Some things work, some things don’t. We haven’t totally decided where the game is headed – so things will change. Things will change a lot. We might even make changes that you think are wrong. But we have a plan. It’s in our interest to make the game awesome – so please trust us.”
Rust can take up between 8 and 20 GB of harddisk space.