Boulder

Boulders are unique placeable 2x2 foreground objects, and are stationary when placed. When unsupported, they fall and begin to roll away. They pick up speed and damage players, enemies and NPCs along their path. Boulders will also begin to roll if mined with a Pickaxe or Drill, meaning that they cannot be picked up again once placed.

Boulders will roll across flat surfaces and down slopes, but will break and disappear on contact with an obstacle. On contact with entities, they cause damage in the range of 60-80 per hit. Players take double damage in Normal Mode and quadruple (x4) in Expert Mode. Boulders pierce through an unlimited number of entities.

Boulders always roll left, unless there is no space for them to go left, in which case they roll right.

Boulder traps occur naturally in the Underground and Cavern layers, and consist of a single Boulder in the ceiling, supported by six (2x3) Active Stone Blocks wired to Pressure Plates. If a player walks onto the Pressure Plate, the Boulder falls and damages any players or entities it hits.

Tips

 * Effective when used along with Grenades against The Destroyer and Eater of Worlds.
 * Using boulders is an efficient way to kill NPCs, should one wish to do that (for example, getting their unique drops).

Trivia

 * Boulders are the only placeable objects that cannot be picked up again once placed, as Hammers have no effect on them, and mining them with a pickaxe or drill only causes them to roll.
 * At full tilt, boulders roll faster than a running player with every conceivable speed boost applied. Using a Hoverboard or Asphalt can however overcome them.

History
Rocher