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Nyanko Defense Force (にゃんこ防衛軍), also known as Battle Cats Galaxysource, was a LINE QUICK GAME. Developed by PONOS and Game Closure. LINE ended support for this game as of 30/10/2020, meaning that it can no longer be played.


Nyanko Defense Force was a vertical scrolling shoot 'em up game featuring popular characters from "The Battle Cats". The cats flew to space to protect the stars to perform an arcade-style battle, destroying incoming aliens one after another.
Taking advantage of the features of the HTML5 messenger in the game, you could challenge even more powerful bosses by forming a group together with friends. There was no energy system, so you were able to play as many times as you want.
This game was exclusively for smartphones and could not be played on a PC.
This game was completely free to play, but be aware that there were in app purchases.

In this game, you played as a Cat that was a captain of a spaceship destroying spaceship versions of recognizable and exclusive enemies.


Known Initially

There were 7 key features:

  • Start Battle 「タップして戦問開始」: The main function of the game, just tap the screen to start a battle!
  • Member Formation 「降員編成」: The area where you were able to select two units to help support you in battle against the enemies! There were certain typings to certain support units.
    • Flame - Weak against Water.
    • Light - Weak against Dark.
    • Grass - Weak against Flame.
    • Dark - Weak against Light.
    • Water - Weak against Grass.
  • Raid Boss 「レイドボス」: You could battle against strong raid bosses that had an extreme amount of health, and deal as much damage as possible to earn rewards.
  • Shop 「ショップ」: Buy in-game items with LINE's own currency to make battling easier.
  • Ranking 「ランキング」: Showed the ranking between you and your friends on how far you have gotten during a battle.
  • Quest 「クエスト」: A place to send off your inactive captains and support units, the quest area sent your captain and support units off on a quest for a certain amount of time, once returned, they would gain levels.
  • Captain Selection/Upgrade 「キャプテン選択」: A place to select the captain you wanted to use whenever you battled.

Support and Enemies

Most of the names used are conjectural.

UFO Doge
Red UFO Doge
UFO Doge Dark
UFO Shibalien
UFO Zoge
Metal UFO Doge
UFO Jackie Peng
Red UFO Peng
Black UFO Peng
UFO Star Peng
UFO Zackie Peng
Metal UFO Peng
Winter UFO Pigge
Green UFO Pigge
Dark UFO Pigge
Snache Bomb - If defeated, Snache Bomb would explode the current row of spaceships it was in.
Li'l Bun Bun - Li'l Bun Bun would appear every now and then to create a barricade from attacking the enemy ships. If defeated, he would drop a plethora of rewards.
Shy Boy - Shy Boys would appear from the top of the screen and descend to the bottom with a warning. They were indestructible and could not be defeated.
Green Chest - If defeated, a plethora of gems would appear from it.
Water Spirit - A minion spawned by the many Nyandam variants. It would occasionally shoot several blue projectiles at once.
Air Spirit - A minion spawned by the many Nyandam variants. It would constantly morph into a tornado, releasing a small green projectile.
Fire Spirit - A minion spawned from the many Nyandam variants. It would periodically shoot five orange projectiles at the player in quick succession.

Most of these enemies could also appear as sparking, which would drop either an item or a type of gem.

Teacher Bun Bun
Forest Bear (森のクマさん Mori no Kuma-san) - A variant of Teacher Bear that looked like a tree
Poison Sir Seal (毒ゴマさま Doku Goma-sama) - A green variant of Sir Seal

Dark Nyandam (ダークニャンダム Dāku Nyandamu) - A purple variant of Dark Emperor Nyandam

These are the Raid Bosses that are known to exist. Since each one was only available for a limited time, it is possible that the game had Raid Bosses that are completely undocumented.

Teacher Bun Bun
A Christmas variant of Teacher Bun Bun
A fiery variant of Teacher Bun Bun
A purple variant of Teacher Bun Bun with devil horns and a spiral on his belly
Relic Bun-Bun
A fiery variant of Relic Bun-Bun
Forest Bear (森のクマさん Mori no Kuma-san) - A variant of Teacher Bear that looked like a tree
A winter variant of Teacher Bear
A Christmas variant of Teacher Bear
General Bear (大将 森のクマさん Taishō Mori no Kuma-san) - A blue-eyed variant of Teacher Bear wearing armor
A Relic variant of Teacher Bear
A purple-and-Black variant of Teacher Bear with devil horns
A dessert variant of Teacher Bear (Valentine's Bear?)
Poison Sir Seal (毒ゴマさま Doku Goma-sama) - A green variant of Sir Seal
Frozen Seal - Presumably an icy variant of Sir Seal
A Christmas variant of Sir Seal
General Seal (大将 毒ゴマさま Taishō Doku Goma-sama) - A silver variant of Sir Seal with blue eyes and a helmet
A fiery variant of Sir Seal
Relic Seal (古代 毒ゴ マさま Kodai Taishō Doku Goma-sama) - A Relic variant of Sir Seal with a warm color palette
General Relic Seal (古代 大将 毒ゴマさま Kodai Taishō Doku Goma-sama) - A Relic Seal with a dark gray circlet on his head and more traditional Relic colors
Frozen Relic Seal (古代 フローズン 毒ゴマさま Kodai Furōzun Doku Goma-sama) - A Relic Seal with a body made out of ice
A fiery Relic variant of Sir Seal
A Valentine's variant of Sir Seal
A winter variant of Kory
Another winter variant of Kory, with ice forming on his ears, a light blue nightcap, gloves, mittens, and a slightly more elaborate weapon
A blue-eyed variant of Kory wearing armor
Deca Lava Kory (デカ 溶岩の コアラッキョ Deka Yōgan no Koarakkyo) - A fiery variant of Kory
A fiery Relic variant of Kory
A purple variant of Kory with devil horns
Dark Relic Kory (古代の 闇の コアラッキョ Kodai no Yami no Koarakkyo) - A purple-and-white Relic variant of Kory
Dark Nyandam (ダークニャンダム Dāku Nyandamu) - A purple variant of Dark Emperor Nyandam
Frozen Nyandam (フローズン ダークニャンダム Furōzun Dāku Nyandamu) - A wintry variant of Nyandam
Ghostly Frozen Nyandam (ゴースト フローズン ダークニャンダム Gōsuto Furōzun Dāku Nyandamu) - Frozen Nyandam, but he's slightly transparent and his body is engulfed in light
Chibi General Nyandam (ちび 大将 ダークニャンダム Chibi Taishō Dāku Nyandamu) - A white variant of Nyandam with blue eyes and armor; it's unknown where the chibi part comes from
Lava Nyandam (溶岩 ダークニャンダム Yōgan Dākunyandamu) - A fiery variant of Nyandam
Umbral Nyandam (闇のダークニャンダム Yami no Dāku Nyandamu) - An even more sinister-looking variant of Dark Nyandam, with a gray throne and crimson horns
Wrathful Relic Nyandam (古代 慣怒 ダークニャンダム Kodai Kando Dāku Nyandamu) - The basic Relic variant of Nyandam
A Relic variant of Frozen Nyandam
A fiery Relic variant of Nyandam
A purple-and-white Relic variant of Nyandam

A Valentine's variant of Nyandam

These enemies appeared as statues or carvings in some of the backgrounds.

Sir Seal
One Horn
Squire Rel
Those Guys
The Face
Chickful A
Mr. Angel

Pigeon de Sable

Currency and Items

  • Nyanko Defence Force had an in-game currency system to unlock new support units, upgrade your captain's ship and buy new ships. There were also items to allow you to boost further in your battle, collect medals easier or make your ship stronger.

A medal would give 1 medal.
A purple gem would give 10 medals.
A red gem would give 20 medals
A blue gem would give 40 medals.
A blue trophy would give 1 trophy.
A bronze trophy would give 10 trophies.

A rainbow trophy would give 20 trophies.

Fuel Tank: Would boost the captains ship for a certain period before stopping back to normal speed.
Magnet: Attracted nearby currency or items towards the ship to allow for easy collection.
Catamin A: Shot double the projectiles, allowing the ship to clear out enemies more efficiently.
Taiyaki: Would power up your ship by one, allowing higher damage output.
Hourglass: When selected, the enemies and your bullets would slow down, allowing you to reposition yourself at normal speed.

Lollipop: When selected, a beam would replace the bullets shot for a short period of time.




Nyanko Maruhi (にゃんこ㊙️情報) has uploaded two Google Drive folders containing the sprites of every Cat Unit, which can be found at


Most of the names used for new enemies are conjectural.


Bosses and Raid Bosses



External Links

Main Game + Spin-offs
Main BCEN (OldCurrent) • BCJP • BCTW • BCKR • 3DS (Name Comparisons) • Minna de Nyanko DaisensouJP only, removedSwitchRegional Differences
Spin-offs Kumanchu RowaiaruJP 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, removedKyoto 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) • ZombieAkuRelicTypelessWitchcollabEva Angelcollab

Gacha Menu Main ArticleFull ListUR GuaranteedStep Up
Other Menu Shop ItemsGamatoto ExpeditionOtoto Development TeamCatnip ChallengesOfficer's ClubMeow MedalsWildcat SlotsCat Scratcher
Items & Currencies XP • NP • Cat FoodBattle ItemsCataminsMaterials • Tickets • CatfruitCatseyes
Battle System
General Battle MechanismReward Mechanism
Gimmicks Timed Score Reward • Restriction (No ContinuesContinuation StageRestriction Stage)
Related to Main Chapters Zombie Outbreaks
Related to Legend Stages Special Events (Release Order) • Stage DifficultiesItem Drop Cats
Misc. Contents MerchandiseBCEN ExclusiveBCJP ExclusiveBCTW ExclusiveBCKR ExclusivePop Culture ReferencesApril Fools' JokesUnimplemented Features