|For crafting, as ammunition|
|Desert, Deep Cave|
Rock is used to craft Bricks, one of the tougher blocks and the heaviest block in the game. Due to its weight it pairs well with the Foundation, both can be combined to make strongholds for the player's valuables or similar.
Rocks can also be used as ammunition for the Railgun.
Things that require Rock to build
Things that can be fueled by Rocks