Megabonk Black Hole Guide: Unlock, Builds & Stats

🎯 Weapon Overview

4 Base Damage

≈ 7 s Base Cooldown

2 s Base Duration

Knockback Tome Lv.10 Unlock Requirement

What it actually does: Fires a projectile that spawns a gravitational field, pulling enemies into a cluster. Damage is modest; its real value is setting up your other weapons to hit big groups safely and efficiently.

🔓 How to Unlock

Start a run with Knockback Tome and upgrade it to Level 10.
End the run; Black Hole becomes purchasable in the Unlocks menu (cost varies by your save state).

Tip: Knockback Tome is available by default. Focus early upgrades and survivability to reach Lv.10 quickly.

⚙️ Core Mechanics & Upgrades

Gravitational Pull

Black Hole groups enemies at a point. They are not stunned—just displaced—so keep positioning discipline. Use the window to detonate with AoE (Aura, Axe, Poison, Mines, etc.).

Upgrade Tracks

📈 Damage

Increases tick damage. Helpful but secondary to its setup role.

⏱️ Duration

Keeps the pull active longer so your AoE can fully connect and you can reposition.

🔢 Quantity (Projectile Count)

More holes = more zones of control across the screen, especially during swarms.

📐 Size

The most impactful scaling for crowd control—bigger radius means more enemies grouped per cast.

📜 Patch 1.0.12 Changes (Oct 8, 2025)

Key Black Hole Changes

Default Size +20% (wider pull radius).
Proc Coefficient reduced: 0.9 → 0.7 (on-hit effect multiplier adjusted to match similar weapons).
Fixed oversized hitbox bug (no longer affects off-screen enemies by mistake).
Performance optimized when combined with high-proc weapons (e.g., Dexecutioner).

Global System Changes Affecting It

Duration fix: added max-duration handling so high Duration no longer blocks new projectiles—this is effectively a buff to many builds.
Final Swarm rework: the endgame swarm is tougher; relying on executes/black holes alone is less effective than before.

Practical takeaway: Black Hole is more consistent as a control tool post-1.0.12, but raw “cheese” strategies relying only on executes + black holes are weaker in Final Swarm.

🏗️ Reliable Build Ideas (No hype, just what works)

🗡️

Bandit Execute Engine

Synergy Pick

Core Weapons

Dexecutioner – execute chances scale with attack rate.
Black Hole – groups enemies for multi-execute/AoE hits.
Aura or Katana – reliable follow-through damage.
Flex: Revolver or Flamewalker for coverage.

Tomes (priority)

Quantity / Size – more/larger Black Holes.
XP – accelerates Bandit’s attack-speed scaling per level.
Cooldown situational (Bandit already scales attack speed).

Items to Watch

Overpowered Lamp – grants an additional on-hit proc roll (great with executes/on-hit items).
Joe’s Dagger – execute-centric scaling over long runs.
Sucky Magnet – periodically vacuums XP so you can stand your ground.
Za Warudo – time-stop lifesaver when you’d otherwise die.

Why it works: Black Hole feeds grouped targets into Dexectioner and other AoE weapons. Bandit’s per-level attack speed pushes more procs and executes through the clumped mobs.

🚀

Spaceman Starter Control

Starting Weapon User

Playstyle note: Early game is fragile; Black Hole provides control, not kills. Lean on safe pathing and ranged support until your tomes scale up. (v1.0.12 also fixed Spaceman’s passive so it works as intended.)

Complementary Weapons

Aura / Flamewalker – passive AoE ticks while enemies are grouped.
Katana / Revolver – single-target coverage outside the hole.
Mines – pre-place within pull zones for burst.

Tomes

Size → Quantity → Duration
Projectile Speed (if offered) helps holes “arm” in the right place.
Agility / Evasion for survivability.

🌀

Universal AoE Follow-Ups

Any Character

Best Partners

Dexecutioner – executes across the clump.
Aura – 360° damage around you hits everything pulled in.
Axe – overlapping AoE arcs on the cluster.
Poison Flask – DoT ramps fast on packed mobs.
Mines – detonate the grouped wave.
Katana – fast follow-through and early carry.

Tomes (generic order)

Size & Quantity first for control coverage, then Duration.
XP for faster access to higher tome levels and weapon upgrades.

Execution loop: Cast Black Hole into an approaching pack → drop/aim AoE → reposition while the pull keeps the pack inside damage.

👑 Final Boss Mechanics (What actually happens)

At the start of the final boss, you typically fight using only your starting weapon.
As phases progress (pylons/objectives), additional weapons are returned to you—so don’t panic if you see them “missing” at first.
Plan ahead: ensure your starter weapon can handle single-target DPS checks.

Practical tip: If Black Hole is your starter (e.g., Spaceman), bring at least one strong single-target weapon as a secondary during the run so that it returns in later boss phases.

🎓 Advanced Tips

Positioning

Lead your casts: aim where the pack will be, not where it is.
Chokepoints & walls: pull plus terrain funnels waves into tight clusters.
Circle-kite: drop holes along your kite path to “harvest” the chase pack.

Timing

Early (0–10m): play safe; Black Hole is control, not damage.
Mid (10–30m): sync holes with your AoE weapon windows.
Late (30m+): Quantity + Size for near-constant control coverage.

Common Mistakes

Using Black Hole as your only damage plan.
Skipping Size/Quantity—these are core to its identity.
Ignoring single-target DPS for the boss if your starter is Black Hole.

🚀 Master Black Hole

Use it to control space, then let your real damage dealers go to work.

⚔️ All Weapons 🚀 Spaceman Guide 🗡️ Bandit Guide 🏗️ Best Builds

Black Hole — Accurate Guide (v1.0.12)