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.
||Windows 7 or higher (64-bit)
||Intel Core i7-3770 / AMD FX-9590 or better
10 GB RAM
||GTX 670 2GB / AMD R9 280 better
||20 GB available space