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Serial Codes were special codes that could be input in the game for various rewards. This feature was removed alongside the Invite Friends to get Moneko feature in the Version 4.3 Update.

Classification and Function

Gift Codes

These were one-time use codes that were sent to the winners of PONOS' contests. These codes would give the player items such as XP, Cat Food and Tickets.

Secret Codes

These were codes that when used, would unlock hidden Cat Units.

Merchandise Codes

These were one-time use codes that were included alongside Battle Cats merchandise (or in the case of Mob Cat and the 5 Kishidan Collaboration Units, movie tickets and CDs). They would give items or Cat Units.

How to use

Main menu for Version 2.1.1

From the title screen, tap the "Invite friends to get Moneko" button at the bottom right of the screen.

Invite page

Tap the green button "シリアルコード" at the bottom right of the screen.

Serial Code input

Input the code on these two boxes.

Present redemption

If you do it right, the rewards will appear after that.

List of Serial Code Cats

Many of the cats listed below are unobtainable, however, but others have been granted new methods to be obtained, some only in Switch port.

Name of Character Pre 4.3 Method Current Method The Battle Cats Unite! Method
Capsule Cat Input codes from Nyanko Great War! Strap gashapon machine. Reach the milestone during the MattShea Collaboration Event. Clear any stage by sending only one Cat Unit on the field.
Masked Cat Input codes from Battle Cats lottery double chance campaign. N/A Open the game at midnight.
Maiko Cat Input codes from Nyanko Ecology Report. N/A Clear Bermuda 10 times with Cat in the lineup.
Evangelist Cat Input codes from PONOS employees' business cards. N/A Clear The Big Bang.
Toy Machine Cat Input codes from Nyanko Great War! Strap 2 gashapon machine. N/A Play the Cat Capsule 30 times, then clearing any stage in-game.
Blue Shinobi Input codes from Nyanko Great War! Strap Set. N/A Clear Greece and Russia 10 times.
Cabaret Cat Input the serial code: ラス-ボス Clear the stage Let's GOOO! <(@0@)> N/A
Cat Bros Input codes from Nyanko Great War! Strap 3 gashapon machine. Clear the stage For the Fans. Clear any stage with a lineup consisting of; Macho Cat, Wall Cat and Brave Cat.
Hikakin Input the serial code: ヒカ-キン Clear Hikakin Advent. N/A
Squish Ball Cat Input codes from Nyanko Great War! Funyuu Funyuu Mascot!, from 5th Gashapon machine. Clear the stage Watch & Earn. View the Cat Storage for 5 minutes straight then winning any stage in-game.
God Input codes from Nyanko Ecology Report Special Edition N/A N/A
Tutorial Cat Input the serial code: とくい-ふくだ N/A N/A
Ayanokōji Shō Input codes from Kishidan's CD "幸せにしかしねーから" N/A N/A
Saotome Hikaru Input codes from Kishidan's CD "幸せにしかしねーから" N/A N/A
Saionji Hitomi Input codes from Kishidan's CD "幸せにしかしねーから" N/A N/A
Hoshi Guranmanie Input codes from Kishidan's CD "幸せにしかしねーから" N/A N/A
Shiratori Shōchikubai Input codes from Kishidan's CD "幸せにしかしねーから" N/A N/A
Mob Cat Input code included in Yakuza Apocalypse movie ticket. N/A N/A
Yamaoka Minori Input the serial code: みのりん N/A N/A
Nakamura Kanae Input the serial code: かにー N/A N/A
Cat Bros N/A N/A Purchase The Battle Cats Unite!.
Mallet Cat N/A N/A Purchase The Battle Cats Unite! Switch Case combo.
Kabuto Cat N/A N/A Purchase the 15th, November 2018 issue of CoroCoro Comic.
Kuwagata Cat N/A N/A Purchase the 9th, February 2019 issue of CoroCoro Comic.
Corodragon N/A N/A Participate in the Next Generation World Fair Winter 2019.
Undies Cat Jr. N/A N/A Purchase the 15th, July 2020 issue of CoroCoro Comic.


Main BCEN (OldCurrent) • BCJP (OldCurrent) • BCTW • BCKR • 3DS (Name Comparisons) • Minna de Nyanko DaisensouJP only, removedSwitchRegional Differences
Spin-offs Kumanchu RoyaleJP only, removed, old generation phonesBattle Cats RangersremovedNyanko RunawayJP only, removedNyanko Defence ForceJP only, removedNyanko New JapanJP onlyGo! Go! Pogo CatThe Burgle CatsBattle Cats Quest
Related Mr. seriesremovedGirlsMonsJP only, removed • NamesutaJP only, removedKyoutou ProjectJP only, removedYuru-i GeGeGe no Kitarou: Youkai Dotabata DaisensouJP only
Main Menu
Main Menu Main MenuCat BeaconBCJP onlyInvite Friends to get MonekoremovedSerial CodesremovedGame Updates
Game Modes Game ChaptersexplanationMain Chapters LevelslistEmpire of CatsInto the FutureCats of the CosmosThe Aku RealmsLegend StagesChallenge BattleCatclaw DojoRanking Dojo
Cat Base Menu
Upgrade Menu Cat Units (DictionaryallFull ListallRelease Orderall)

Rarities: Normal (NN) • Special (EX) • Rare (RR) • Super Rare (SR) • Uber Rare (UR) • Legend Rare (LR)
Base Upgrades: Cat CannonWorker Cat • Research • Accounting • Study • Energy
Related: Level-upUser RankTrue FormSpecial AbilitiesTalentsTalent Orbs

Equip Menu Cat Combo (Main ArticleRelease OrderOld Version)
Treasure Menu ExplanationTreasure Festival
Dictionary Menu Enemy Units (DictionaryallFull ListallSoL OrderUL OrderRelease Orderall)

Attributes: TraitlessRedFloatingBlackMetalAngelAlien (Starred) • ZombieAkuRelicTypelessColossalBehemothWitchcollabEva Angelcollab

Gacha Menu Main ArticleFull ListUR GuaranteedStep Up
Other Menu Shop ItemsGamatoto ExpeditionOtoto Development TeamCatnip ChallengesOfficers' ClubMeow MedalsWildcat SlotsCat Scratcher
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Related to Main Chapters Zombie Outbreaks
Related to Legend Stages Special Events (Release Order) • Stage DifficultiesItem Drop Cats
Misc. Contents
MerchandiseBCEN ExclusiveBCJP ExclusiveBCTW ExclusiveBCKR ExclusiveRecovery ModePop Culture ReferencesApril Fools' JokesUnimplemented Features