Spaceman Build Megabonk

Spaceman Build GuideUpdated March 2026  ·  v1.0.64
Crowd ControlXP Scaling
The best Spaceman build in Megabonk stacks Size Tome and Duration Tome on Black Hole, using the gravitational pull to cluster enemies and then chain Spicy Meatball explosions through the group while the Quantum XP Theory passive accelerates levelling.

Spaceman starts with Black Hole and the Quantum XP Theory passive: +1% XP Gain per level. Black Hole pulls enemies into a cluster and upgrades with Damage, Projectile Count, Duration, and Size. The Stats wiki confirms Black Hole scales with Duration and Size.

The wiki confirms Cooldown and projectile upgrades to maximise Black Hole uptime as the core strategy. Spicy Meatball has a 25% explosion chance per hit and its wiki confirms the explosion radius scales with Size, the same Tome that boosts Black Hole pull radius.

Head back to the builds hub to browse every other character.
Spaceman Megabonk character
Spaceman
Passive, Quantum XP Theory: +1% XP Gain per level. Immune to fall damage. Unlock: Complete 6 Challenges and have Black Hole unlocked. No bonus base stats above baseline.
Starter weapon: Black Hole Black Hole
MediumCrowd ControlQuantum XP Theory

How to Build Spaceman in Megabonk

Black Hole is the primary weapon. Size Tome and Duration Tome are wiki-confirmed for Black Hole. Cooldown Tome is wiki-confirmed for Spaceman specifically. Spicy Meatball chains explosions through Black Hole clusters. Demonic Soul stacks damage from kills that Spaceman generates at an accelerated rate through his XP passive.

Weapons
Tomes
Key Items
Black Hole
Aura
Firestaff
Frostwalker
Size Tome
Duration Tome
Cooldown Tome
Spicy Meatball
Credit Card Green
Demonic Soul
Weapons
Black Hole Black HoleAura AuraFirestaff FirestaffFrostwalker Frostwalker
Tomes
Size Tome Size TomeDuration Tome Duration TomeCooldown Tome Cooldown Tome
Upgrade Priority
PhasePickupWhy
0-4 minBlack Hole Black Hole + Size Tome Size TomeBlack Hole upgrades with Size and Duration per the wiki. Size Tome widens the pull radius, dragging more enemies into the cluster per black hole. The wiki confirms area damage and battlefield control are the goal.
4-8 minDuration Tome Duration Tome + Cooldown Tome Cooldown TomeDuration Tome is wiki-confirmed for Black Hole via the Stats wiki. Duration keeps each black hole active longer. Cooldown Tome is wiki-confirmed for Spaceman specifically, maximising Black Hole uptime.
8-12 minSpicy Meatball Spicy Meatball + second weaponSpicy Meatball gives a 25% chance of an explosion on every hit. Black Hole clusters enemies tightly. One hit in the cluster triggers a chain explosion through all nearby enemies. The wiki confirms explosion radius scales with Size, the same stat that boosts Black Hole.
12+ minDemonic Soul Demonic Soul + legendary itemsDemonic Soul gives stacking damage per kill. Spaceman's XP Gain passive levels him faster, generating more kills over a run. More kills means faster Demonic Soul stacking on top of Damage Tome scaling.

This variant combines Spaceman's XP passive with XP Tome and Cursed Tome for aggressive level scaling. The XP Tome wiki confirms Cursed Tome stacks with XP multipliers: more enemies means more XP orbs which means greater benefit from XP Gain bonuses. Spaceman's passive adds to the XP Gain stack every level. Higher levels mean more weapon and Tome upgrades, making each run scale faster into lategame.

Weapons
Tomes
Key Items
Black Hole
Aura
Flamewalker
Frostwalker
XP Tome
Size Tome
Cooldown Tome
Spicy Meatball
Credit Card Green
Demonic Soul
Weapons
Black Hole Black HoleAura AuraFlamewalker FlamewalkerFrostwalker Frostwalker
Tomes
XP Tome XP TomeSize Tome Size TomeCooldown Tome Cooldown Tome

Three weapons, three tomes. Black Hole handles crowd control, Aura covers passive close-range damage, Firestaff adds projectile AoE on top of the clustered enemies. Size Tome first to maximise the Black Hole pull radius. Cooldown Tome second for more Black Holes per minute. Forgiving because the Black Hole pull keeps enemies away from Spaceman while the passive provides steady XP to reach key Tome levels faster.

Weapons
Tomes
Key Items
Black Hole
Aura
Firestaff
Size Tome
Cooldown Tome
Duration Tome
Spicy Meatball
Credit Card Green
Demonic Soul
Weapons
Black Hole Black HoleAura AuraFirestaff Firestaff
Tomes
Size Tome Size TomeCooldown Tome Cooldown TomeDuration Tome Duration Tome

How to Play Spaceman in Megabonk

Cooldown Tome is wiki-confirmed for Spaceman

The Spaceman wiki explicitly lists Cooldown upgrades as a core synergy to maximise Black Hole uptime. More Black Holes per minute means more groups pulled into clusters more frequently. Cooldown Tome is the primary quality-of-life investment for consistent battlefield control.

Spicy Meatball chains through Black Hole clusters

Spicy Meatball gives a 25% chance for each hit to trigger an explosion dealing 65% of that hit's damage to nearby enemies. Black Hole pulls all enemies into a tight cluster. One hit landing in that cluster triggers an explosion that hits every enemy in range, each with their own 25% chance to chain further. The explosion radius also scales with Size, the same Tome that boosts Black Hole.

XP passive makes Spaceman level faster than others

Spaceman gains +1% XP Gain per level from the Quantum XP Theory passive. At level 50, he has 50% bonus XP Gain just from the passive, not counting XP Tome. Higher levels mean more Damage Tome upgrades, more weapon levels, and more chest items in equivalent time. This is Spaceman's core advantage in long runs.

Size Tome benefits both Black Hole and Spicy Meatball

The Stats wiki confirms Black Hole scales with Size and Duration. The Spicy Meatball wiki confirms its explosion radius also scales with Size. This means a single Tome investment in Size simultaneously widens the Black Hole's pull radius and the explosion radius of Spicy Meatball, making both more effective at once.

Best Items for Spaceman

All three items are sourced from the wiki. Spicy Meatball is wiki-confirmed for AoE chain builds and scales with Size Tome. Demonic Soul is wiki-confirmed for high-kill runs. Credit Card Green benefits from Spaceman's faster levelling.

Spicy Meatball
Spicy Meatball
25% hit chance to trigger an explosion dealing 65% of that hit's damage to nearby enemies. Black Hole clusters enemies tightly, so one explosion chains through the entire group. The Spicy Meatball wiki confirms explosion radius scales with Size Tome, the same Tome that boosts the Black Hole pull radius.
Credit Card Green
Credit Card (Green)
Stacks Luck per chest opened. Spaceman's +1% XP Gain per level means he opens more chests per run by reaching higher levels faster. Each additional level of the passive adds to the XP compound, meaning Spaceman benefits from Credit Card stacks more than baseline characters by opening more chests in a given run duration.
Demonic Soul
Demonic Soul
Stacking damage per kill, wiki-confirmed for long high-kill runs. Spaceman's XP passive accelerates levelling which means more kills over time. Black Hole clusters enemies and AoE damage sources clear them simultaneously, generating large kill counts that build Demonic Soul stacks quickly.

How to Unlock Spaceman in Megabonk

Spaceman requires completing 6 Challenges and having Black Hole unlocked.

1
Black Hole Unlock Black Hole
Take the Knockback Tome in a run and upgrade it to Level 10. Knockback Tome is available from the start. Purchase Black Hole from the Unlocks tab for 2 Silver once done.
2
Silver Complete 6 Challenges
Challenges become available after clearing Tier 1 with any character. Enable one challenge per run and complete it. Any six challenges count. This is a significant grind that requires progressing through the challenge system.
3
Silver Buy Spaceman from the Unlocks tab
Return to the Main Menu, open the Unlocks tab, and purchase Spaceman with Silver once both conditions are met.

How Good is Spaceman in Megabonk?

Spaceman is a strong crowd control character whose passive compounds quietly every level. Black Hole is considered one of the most powerful crowd control tools in the game per its wiki page. The XP passive means Spaceman reaches higher weapon and Tome levels in the same time as other characters, giving him better overall scaling. He has no bonus base stats, so the passive and Black Hole uptime are entirely responsible for his edge. Immune to fall damage.

For a full character ranking see the Megabonk tier list.

For broader help with the game, our Megabonk tips guide covers mechanics, survival strategy, and beginner advice.

Frequently Asked Questions

Explore Other Builds

Every Megabonk character build guide on Rogue Ranker.