RUST is a popular survival game developed and published by Facepunch Studios. The game takes place in a harsh open-world environment, where players must gather resources, build shelters, and fend off hostile creatures and other players.

Players begin the game with only a rock and a torch, and must scavenge for resources such as wood, stone, and metal in order to build tools and weapons. They can also craft clothing and armor to protect themselves from the environment and other players.

RUST features a complex crafting system, where players can combine resources to create a wide variety of items and structures, including weapons, traps, and bases. Players can also form alliances with other players, or engage in hostile activities such as raiding and looting.

One of the unique features of RUST is its permadeath mechanic, where players lose all their items and progress upon death. This adds an extra layer of challenge to the game, and encourages players to be cautious and strategic in their actions.

RUST also has a strong modding community, with players able to create and share custom mods that add new features and content to the game. Facepunch Studios also releases regular updates and patches, which improve the game's performance and add new gameplay mechanics.

Overall, RUST offers a challenging and immersive survival experience for players, with its complex crafting system, hostile environment, and player interactions.