MewGenius Answerbook
Risk: High
Rat King Boss Guide
How to prepare, survive the opener, and beat Rat King safely in Mewgenics.
Best beaten by spacing, safe repositioning, and punishing after commitment.
HP: 100 MV: 2
Fast answer
Read this firstBest short answer
Remove the first wave of adds immediately; don’t let the board fill.
Biggest mistakes
- •Letting adds accumulate: spawns snowball tempo and block escape lanes.
- •Standing adjacent carelessly: Toss converts adjacency into collision damage.
- •Ignoring buff turns: Drink Booze can turn a manageable boss into an evasion/crit spike.
How you actually win
- •You stabilize spawns early (kill priority adds before they overwhelm lanes).
- •You keep adjacency discipline to deny easy Toss value.
- •You plan for the enrage breakpoint and enter it with board control.
Answerbook (how to not die)
Run killers
- •Letting adds accumulate: spawns snowball tempo and block escape lanes.
- •Standing adjacent carelessly: Toss converts adjacency into collision damage.
- •Ignoring buff turns: Drink Booze can turn a manageable boss into an evasion/crit spike.
Win conditions
- •You stabilize spawns early (kill priority adds before they overwhelm lanes).
- •You keep adjacency discipline to deny easy Toss value.
- •You plan for the enrage breakpoint and enter it with board control.
Positioning rules
- •Avoid adjacency unless you’re committing to a controlled trade; Toss is the tax.
- •Keep the board open: leave at least one retreat lane that spawns can’t block.
- •If he buffs, respond with tempo (burst or control) instead of slow trades.
Tempo plan
Opener (rounds 1–2)
- •Remove the first wave of adds immediately; don’t let the board fill.
Midfight (stabilize)
- •Pressure while managing spawns; keep spacing to reduce Toss setups.
Finisher (close safely)
- •Before enrage or when it starts, spend defensives and end quickly; don’t fight enraged + full adds.
Loadout hints
AOE or efficient cleanup
Single-target-only damage with no cleanup
Source: boss-chp2.csv · Last tested: 2026-03-02 · Some move values are still being confirmed in live runs.
About Rat King
Add-spawning trample boss with throws; control the board or get swarmed.
Type: Boss
Why players lose this fight
No element extracted
TrampleSummon/SpawnThrowEnrageSelf-Buff
Key triggers
Spawns adds and escalatesEnrage around ~70 HP (per notes)
Add-spawning trample boss with throws; control the board or get swarmed. The fight is mainly defined by trample, summon/spawn, throw, enrage, self-buff. The most dangerous trigger identified so far is Spawns adds and escalates.
Quick facts
- Game
- Mewgenics
- Type
- Boss
- HP
- 100
- Movement
- 2
- Risk
- High
- Last tested
- 2026-03-02
Related bosses
If you are struggling with Rat King, these bosses share similar mechanics, pressure patterns, or positioning rules.
Spinnerette
Risk: High Bonus TurnsTrampleSummon/Spawn
Zaratana
Risk: High TrampleSummon/SpawnSupport
Tormentor
Risk: High AOESummon/SpawnEnrage
Big Slime
Risk: Medium Bonus TurnsTrampleSummon/Spawn
Mama Maggot
Risk: High Bonus TurnsTrampleSummon/Spawn
Throbbing King
Risk: High TramplePhase TriggerSummon/Spawn
FAQ
How do you beat Rat King in Mewgenics?
Focus on the main loss pattern first: Letting adds accumulate: spawns snowball tempo and block escape lanes. / Standing adjacent carelessly: Toss converts adjacency into collision damage.. Then follow the opener plan: Remove the first wave of adds immediately; don’t let the board fill..
What does Rat King do in Mewgenics?
Add-spawning trample boss with throws; control the board or get swarmed.
Where is Rat King found in Mewgenics?
Rat King appears during a later home-base defense sequence after the Boneyard progression line.
What counters Rat King?
Bring: AOE or efficient cleanup Avoid: Single-target-only damage with no cleanup If notes are partially unverified, assume the worst-case version until confirmed in-game.