Rockets

Rockets are a Hardmode, post-Plantera type of ammunition which are mainly sold by the Cyborg. The Rocket I variant is also dropped by Plantera when it drops the Grenade Launcher. Most launchers use Rockets as ammunition.

All rocket types have two significant defining traits: area of effect, and the ability to destroy tiles. Rockets I and II have a small area of effect, closest to that of a Bomb or Grenade, while Rockets III and IV have an area similar to the blast radius of Dynamite. Rockets I and III will leave tiles unaffected, while II and IV will break blocks and furniture in their blast radius (except for explosion-proof objects).

In most cases, a rocket's splash damage will harm the player who fired it if they are caught in the blast radius. These explosions will not affect other players unless they have PvP enabled, however.

Types
There are currently 12 /  4 different rockets available in Terraria, all of which are Hardmode-exclusive.

Behavior
Some rockets have unusual behavior in certain launchers, including transforming rockets into different kinds of projectiles with unusual behaviors. This table lists how some of the basic properties of the rocket variants are affected by the different rocket-using launchers. Additional info on how and why some of these changes happen can be found on the launchers' individual pages.