Spike Ball

Type	Invincible
Environment	Dungeon
AI Type	Spike Ball AI
Damage	32/64/96
Max Life	100/200/300
Defense	100
KB Resist	100%
Hurt	https://terraria.wiki.gg/wiki/File:NPC_Hit_1.wav
Killed	https://terraria.wiki.gg/wiki/File:NPC_Killed_1.wav

Not to be confused with Spiky Ball.

The Spike Ball is an indestructible enemy found in the Dungeon which resembles a mace that swings around in a circle from a central pivot point (which cannot be destroyed either), and deals damage to the player on contact. Separate Spike Balls can have differing chain lengths. They spawn and despawn off-screen like any other enemy – if the player leaves a room and returns later, it will have a different configuration of Spike Balls. They are much more likely to appear in Dungeon areas where there are Slab Walls.

Notes

A Spike Ball's chain deals no damage.
If the brick the Spike Ball is attached to is destroyed, it will continue to swing in midair.

Tips

Placing a Torch at the place where a Spike Ball swings through the floor or walls will allow players to keep track of its path.

Trivia

(Old-gen console and 3DS versions) Since Spike Balls are considered enemies, many effects that usually apply to enemies apply to them as well. Note that none of these deals damage to Spike Balls.
- The Leaf Crystal that hovers above the player when wearing Chlorophyte armor fires at Spike Balls.
- The piranha fired from the Piranha Gun can attach to the Spike Balls.
- Pumpkins from The Horseman's Blade will follow Spike Balls.
- NPCs will attack Spike Balls.
The Spike Ball, along with the Blazing Wheel, True Eye of Cthulhu, and the flying Golem Head are the only four invincible enemies in Terraria.
The chain that swings the Spike Ball bounces up and down as it swings.
Spikes in the Dungeon inflict the Bleeding debuff, while the Spike Ball does not.