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.
See some footage of (rust) on my youtube: https://www.youtube.com/channel/UCeT6OCl_V7Poz6KfzT5HbAQ
