Mewgenics Beginner Guide — Starter Cats, Breeding & First Missions

Mewgenics is a tactical cat breeding RPG from Edmund McMillen, the developer behind The Binding of Isaac and Super Meat Boy — which means it is deep, challenging, and full of systems that reward mastery. It combines turn-based tactical combat with a genetics-based breeding system where you create, train, and field teams of warrior cats.

This guide covers what you need to survive your first few hours: understanding the core loop, completing the breeding tutorial, mastering combat basics, building your first effective team, and prioritising early resources. Mewgenics has a gentle tutorial but ramps up quickly, so take your time with the opening missions and do not skip the breeding tutorial.

Game Overview

Core loop

What You Actually Do

You command a team of up to 4 cats in turn-based grid combat against enemy rats, dogs, raccoons, birds and eventually supernatural creatures. Between missions you manage your cattery — a home base where you breed cats, equip items, train stats, and prepare for the next fight.

The core loop is: fight missions to earn coins and resources, spend coins on cattery upgrades and equipment, breed cats to create stronger offspring with better genetic traits, and repeat. The game features a full campaign spanning 8 chapters and 30+ hours, an endless dungeon mode, and asynchronous PvP where your team fights other players' teams under AI control.

Stats And Genetics

Cats have six core stats: Strength for physical damage, Dexterity for accuracy and crit rate, Intelligence for magic damage and healing power, Speed for turn order and dodge chance, Defense for physical damage reduction, and Charisma for buff effectiveness and shop prices. HP and MP are derived stats that scale with level.

Each cat has a breed, which sets base stats and a unique ability; a fur colour, which grants minor elemental bonuses; and up to 6 genetic trait slots. The breeding system is the heart of the game — expect to spend as much time planning bloodlines in the cattery as you spend in combat.

Starter Cat Comparison

Pick 2 of 7

At the start of the game you pick 2 cats from 7 starter options. All starters are eventually replaced, but the right pair makes the first three chapters noticeably smoother. Stats below are base values at level 1.

Cat	Base Stats	Starting Trait	Role	Verdict
American Shorthair (Tank)	STR 7, DEF 7, SPD 7, HP 100	Sturdy — passive +15% DEF	Frontline damage sponge for tutorial fights	Serviceable for chapters 1–2. Replace with British Shorthair or Maine Coon by chapter 3.
Siamese Mix (Striker)	STR 5, DEX 10, SPD 12, HP 80	Quick Paws — passive +10% SPD	Fast attacker to pick off the enemy backline	Excellent starter. High speed lets you act first in most early fights and it scales decently with bred-in damage traits.
Tabby (All-Rounder)	STR 6, DEX 6, INT 6, HP 95	Adaptable — +1 all stats per 3 levels	Flexible filler for any team slot	Good for learning combat roles and stays relevant through chapter 4. Eventually outclassed by Bengal.
Calico (Healer)	STR 4, INT 9, CHA 8, HP 85	Soothing Purr — heal adjacent ally 20% HP, 3-turn cooldown	Team sustain and emergency healing	Best starter healer. Soothing Purr saves lives in boss fights — keep until you get Persian or Birman.
Tuxedo (Debuffer)	STR 5, DEX 8, INT 7, HP 90	Menacing Glare — reduce target DEF 25% for 2 turns	Defense breaker for boss fights	Niche but valuable against high-defense enemies. Pairs well with physical attackers. Replace with Russian Blue.
Orange Tabby (Brawler)	STR 9, DEF 6, SPD 6, HP 105	Brawler — +10% physical damage, −10% accuracy	High-risk melee damage dealer	Strong early damage but misses hurt. Pair with Tuxedo's defense debuff for reliability. Falls off by chapter 3.
Tortoiseshell (Wildcard)	Random distribution, HP 90	Chaos Gene — random stat +5 at start of each battle	Unpredictable — can carry or disappoint	Fun for replay value but too inconsistent for serious team building. Use for challenge runs or skip entirely.

Recommended pair: Siamese Mix + Calico gives you a fast damage dealer and a reliable healer — the two roles most critical for surviving the first boss fights. The alternative is Tabby + Tuxedo if you prefer adaptable offense with defense-shredding support.

First Five Missions

Walkthrough

The first 5 missions are an extended tutorial that introduces combat, breeding and team management one mechanic at a time. Do not rush them — these fundamentals apply to every fight in the game.

Mission	Enemies	Objective	Strategy	Reward
1: The Backyard	3 Garden Rats (25 HP each)	Defeat all enemies	Tutorial fight. Use basic attacks only to learn targeting and turn order. Heal between fights with Calico if you have one.	Cat Treat x5, 50 Coins
2: The Shed	Boss Rat King (150 HP, summons 2 Garden Rats at 50% HP)	Defeat the Rat King	Focus everything on the Rat King and ignore summoned rats unless they block your path. Apply debuffs such as Menacing Glare before committing big damage abilities.	Breeding License (unlocks breeding)
3: First Breeding	None — tutorial mission	Breed two cats to produce a kitten	Read the trait inheritance screen carefully: dominant traits with a gold border have a 70% pass rate. The kitten matures in 3 in-game days but is instantly available for combat.	Kitten (random parent traits), Trait Candy x1
4: Neighborhood Patrol	4 Stray Dogs (60 HP), 1 Alpha Dog (120 HP, +20% ATK to allies)	Defeat all enemies	Kill the Alpha Dog first — its buff makes the strays dangerous. Use AoE if available and keep your tank in front. First fight where composition genuinely matters.	Dog Whistle (+5% SPD), 100 Coins
5: The Alley	2 Raccoon Thieves (70 HP, steal items), Boss Raccoon King (200 HP, AoE trash throw)	Defeat the Raccoon King and recover stolen items	Kill the Thieves first — they steal equipped items on hit. Spread your team against the King's AoE and heal through it. This is the first difficulty spike; expect to need 2 attempts.	Stolen items, Catnip x3, 200 Coins, unlocks Chapter 2

Combat Basics

5x7 grid

Combat is turn-based on a 5x7 grid where you position up to 4 cats against enemy teams. Turn order follows SPD. Each turn a cat performs one action: a basic attack, an active ability that costs MP, an item use, or a defensive stance that halves incoming damage for one turn. Action economy is the whole game.

Rows

Front-row cats attack adjacent enemies but are exposed to melee. Back-row cats can only be hit by ranged attacks and AoE, but their melee has −1 range. Tanks front, casters and healers back.

Flanking

Attacking from the side or rear gives +25% damage and +15% crit chance. Use fast cats like Siamese or Abyssinian to get behind enemy lines.

Focus Fire

Always focus all cats on one enemy at a time. A dead enemy deals zero damage — spreading damage is the most common beginner mistake.

Buff Order

Apply debuffs such as defense reduction and slow before your damage dealers act, and buffs at the start of battle. Turn-one buffs can swing an entire fight.

Basic attacks cost 0 MP, active abilities cost 15–50 MP, and cats regenerate 5 MP per turn. Do not dump MP on turn 1 against weak enemies — save burst for bosses and elites.

Stance

The defensive stance halves incoming damage for a turn. It is often the correct action when a boss telegraphs a big hit and you cannot kill it this round.

Early Game Priorities

First 2–3 hours

Complete the first 5 missions. They unlock breeding, accessories, and Chapter 2 — you cannot meaningfully progress without breeding
Breed your first generation immediately. As soon as Mission 3 unlocks breeding, breed your two starters. The kitten will be stronger than either parent even with random traits — your first power spike
Upgrade the Cattery. The Breeding Den reduces breeding cooldown from 3 days to 2, and Training Grounds allows passive stat training between missions. These are the highest-impact early purchases
Target a B-tier breed after Chapter 2. The Cat Market opens up — a British Shorthair or Ragdoll will carry you through chapters 3–5 while you work toward A-tier and S-tier breeds
Farm Mission 4 for coins. Neighborhood Patrol is the best early coin farm. Run it 3–4 times to build a reserve before the Chapter 2 boss
Save Trait Candies. You earn your first from Mission 3. Never spend one on a starter cat — save every candy for the S-tier breeds you acquire in chapters 5 and beyond

FAQ

Common questions

Which starter cats should I avoid?

Avoid the Tortoiseshell — Chaos Gene is too unreliable while you are still learning the game. Also avoid picking two cats of the same role, such as two tanks or two strikers, because your early team needs coverage against different enemy types. American Shorthair as your only tank works in the tutorial but struggles in Mission 4. The safest pair remains Siamese Mix + Calico for speed, damage and healing coverage.

When should I start caring about genetic traits?

For chapters 1–3, trait optimization is not critical — any cat with decent stats can clear the content. Start paying attention to trait inheritance around chapter 4, when enemies get significantly tankier and hit harder. By chapter 5 you should have at least one cat with a synergistic trait combination such as Regeneration plus Iron Fur. The Chapter 5 boss is the first real test of your breeding strategy; hitting a wall there is almost always a team-building problem rather than a skill issue.

Is the Cat Market better than capturing wild cats?

They solve different problems. The Cat Market is reliable for acquiring specific breeds but costs coins, which makes it essential for targeted breeding programs. Wild captures using Cat Traps bought from the market are free but random — you cannot control which breed appears in a given biome — so they are best for widening your genetic diversity pool. Buy core team breeds from the Market and capture wild cats to harvest rare traits like Shadow Walk or Nine Lives, which are worth breeding into your main bloodline even from a low-tier breed.

How does trait inheritance work when breeding?

When you select two cats to breed, the trait inheritance screen shows what can pass down. Dominant traits are marked with a gold border and have a 70% pass rate. You name the kitten to finalise the breeding. The kitten matures in 3 in-game days but is instantly available for combat, so there is no reason to bench it while it grows.

About This Guide

This is the main-site summary of the Mewgenics beginner guide: starter comparisons, mission walkthroughs, combat rules and early priorities in a format you can scan mid-run.

Starter cat stats are base values at level 1 and the walkthrough is optimized for Standard difficulty. If it saves you a wasted run, you can support the project on UniFans — link in the footer.

Updated: July 2026
Covers: starters, missions 1–5, combat, priorities
Sub-site: mewgenics.gguidehub.com/beginner-guide