Pop!

Pop! is an unlockable passive item added in Booster Pack #3.

Effects

 * Replaces Isaac's tears with eyeballs that can bounce off of each other.
 * Isaac's tears are no longer limited by range, and will instead dissipate when they stop moving or when hitting an enemy or obstacle.

Interactions

 * : Overridden by Brimstone. Does not affect Azazel's Brimstone.
 * : Overridden by Dr. Fetus.
 * : Overridden by Epic Fetus.
 * : Eyeball tears bounce repeatedly against the floor when they about to disappear.
 * : Overridden by The Ludovico Technique, though tear looks like an eyeball.
 * : Overridden by Mom's Knife.
 * : Overridden by Tech X.
 * : Overridden by Technology.

Synergies

 * : Tears maintain the knockback ability but become eyeballs instead.
 * : Tears will increase their damage and size as they travel, and they are not limited by range.
 * : The tears will bump into each other, increasing in speed as they go through the room until they dissipate or hit an enemy.
 * + : Forces the tears to stay in front of Isaac, which can sometimes glitch the bouncing tears to 'stick' to Isaac where they stay until they dissipate, preventing other tears from being shot until then.
 * /: Split tears can also be knocked around.
 * : Tears gain a damaging aura and basically become damaging aura fields.
 * + : Tears will quickly full up the screen and increase in damage, easily killing any enemy.
 * : Tears do not arc and will instead shoot straight retaining their explosive abilities on impact with enemies or obstacles, or when they eventually fall down.
 * : Fires a barrage of eyeball tears and a stone. The stone acts like an eyeball tear; it spins, floats in the air, and can be moved by firing other tears at it.
 * : Removes the arcing effect from the tears, greatly increasing air time. The tight cluster the tears are shot in will cause unpredictable spread, however.
 * : Removes the arcing effect from the tears, greatly increasing air time. The tight cluster the tears are shot in will cause unpredictable spread, however.
 * : Tears constantly swarm around Isaac, quickly filling the room.
 * : When tears hit an enemy, obstacle, or wall. And they split into many smaller tears that have the same behavior as eyeball tears.
 * Piercing tears: Tears will not stop when hitting enemies, allowing them to last longer.
 * : Giant eyeball tears continue to travel with leftover damage.
 * : Allows tears to never disappear when hitting enemies and objects, increasing the uptime of tears greatly.
 * Spectral tears: Tears will not stop when hitting objects, allowing them to last longer.
 * : Creates electric traps that can knocked about for enemies to be lured into.

Trivia

 * Pop! is based on this Steam Workshop item by Scayze and Ashkait, originally known as Bank Shot and themed about billiard balls.
 * Pop! has a new sprite since Booster Pack #4.