MegaBonk On Hit Effects Guide | All Effects Explained

On-hit effects in MegaBonk are among the most powerful mechanics in the game. These special triggers activate whenever your attacks connect, applying poison, lightning, explosions, or other status effects. Building around on-hit effects can completely change your run, especially when paired with fast weapons and attack speed tomes.

How On-Hit Effects Work in MegaBonk

On-hit effects trigger whenever your weapon or ability hits an enemy. Each item that lists “on-hit” has a percentage chance to activate its special bonus. These effects stack, meaning multiple on-hit items can trigger at the same time.

The strength of on-hit builds scales mainly through Attack Speed, Projectile Quantity, and Weapon Count. Faster attacks mean more hits, and more hits mean more triggers. This is why characters with multi-projectile weapons like CL4NK or Birdo perform best with these setups.

Best On-Hit Items

Moldy Gloves

Creates a moldy poison cloud when you hit enemies. The cloud lingers and damages nearby foes over time. It stacks perfectly with Moldy Cheese and other poison-related effects.

Moldy Cheese

Gives a 40 percent chance to poison enemies on hit. This is the foundation of most poison-based on-hit builds and can be duplicated using a Microwave to unlock Moldy Gloves.

Lightning Orb

Has a 25 percent chance on-hit to summon a lightning strike that can stun enemies. Ideal for area control and stunlocking bosses.

Dragonfire

Has a 15 percent on-hit chance to summon dragonfire that burns enemies. Works best with fast multi-hit weapons to trigger frequent burns.

Kevin

Triggers self-damage with a 25 percent chance on-hit, activating all other on-hit effects in the process. This makes it one of the most powerful and dangerous synergy items in the game. Only viable if you have lifesteal or strong regeneration to offset the self-harm.

Cursed Grubbies

Has a small chance on-hit to cast cursed magic. While less consistent, it scales well when combined with Crit Damage tomes or curse-based effects.

Giant Fork

Gives Critical Strikes a chance to Critically Strike again, creating “MegaCrits.” It doesn’t increase base on-hit triggers, but it pairs perfectly with crit-focused weapons and tomes.

Building Around On-Hit Effects

Stacking on-hit effects is all about quantity. Focus on high-rate weapons such as Wireless Dagger, Revolver, or Lightning Staff. These allow more frequent procs and faster scaling from items like Moldy Gloves or Lightning Orb.

Pair your setup with Attack Speed Tome, Quantity Tome, and Agility Tome to keep pressure on enemies and trigger effects nonstop. If you’re using Kevin, always include Leeching Crystal or Demonic Blade for lifesteal recovery.

For poison builds, combine Moldy Cheese, Moldy Gloves, and Toxic Barrel to create chain reactions that melt entire waves. For elemental builds, Dragonfire and Lightning Orb dominate thanks to wide coverage and stun potential.

→ List of All Items in MegaBonk

Final Blurb

On-hit effects in MegaBonk are the backbone of late-game builds. They scale with speed, quantity, and smart item stacking, turning even simple weapons into area-clearing machines. Focus on reliable trigger items and sustain to keep your damage rolling nonstop through every stage.