Battle Cats Wiki
Battle Cats Wiki

Puffer Planet (Merciless) is an Advent Stage appearing on the 13th, 14th, 27th, and 28th of every month. When clearing this stage, the player has a chance to unlock Mightycat. Unlike other Advent Stages, it is only unlocked after clearing Chapter 2 of Cats of the Cosmos. This is a No Continues stage.


  • 1 Puffsley's Comet spawns as the boss after 20 seconds600f.
  • 3 Corporal Weylands spawn after 50 seconds1,500f, delay 40~50 seconds1,200f~1,500f.
  • 1 Project A spawns after 80 seconds2,400f.
  • 4 Star Pengs spawn after 26.67 seconds800f, delay 16.67~20 seconds500f~600f.
  • 4 Star Pengs spawn after 100 seconds3,000f, delay 13.33~16.67 seconds400f~500f.
  • 4 Star Pengs spawn after 160 seconds4,800f, delay 10~13.33 seconds300f~400f.
  • 4 Star Pengs spawn after 206.67 seconds6,200f, delay 40~50 seconds1,200f~1,500f.


Due to the massive buffs on the Starred Aliens (particularly the Star Pengs), it is highly recommended if not outright required to have all anti-Starred Alien Treasures before attempting this stage. Missing even one Treasure set will lead to each Star Peng having 672,000 health and 36,000 attack power, making them nigh-unbeatable without a cheese strategy or very boosted Ubers.

The Alien fruit treasures also help greatly, allowing Massive Damage units (Chill Cat and many Uber Rares) to deal 33% more damage, and to allow Catellite at level 40 to barely survive Puffsley's attack.

Speaking of Catellite, he is one of your best friends here, being able to take 3~5 Star Peng hits depending on level. Level 40+ is recommended. Use him with Manic Eraser Cat as meatshields. Another great unit here is Chill Cat, who has great DPS against the Star Pengs at level 35+. Cost Down talent is mandatory. Can Can Cat and Bullet Train Cat are also great damage units, with BT being able to rebound and hit twice.

There are 3 main ways to play this stage:

  1. Survive and kill the 12 main Star Pengs using Catellite, Chill, Can Can, and Bullet Train, then finish off the supporting enemies. Shown in the first video.
  2. Cheese the stage using Healer Cat CC. Shown in the second video.
  3. Use Awakened Bahamut Cat or one of the ubers listed below to lure and kill / severely damage Puffsley, making the stage much easier.

Recommended Ubers

The following Uber Rares are good for this stage, and if you have any of these, using them will make things easier.

  • Bazibastra: Massive damage and resistance to Aliens allow Bazibastra to both lay a dent in Puffsley as well as soak up some hits. Make sure to keep him at a distance from your base, as Puffsley's Omni Strike might still reach your base.
  • Aphrodite: The classic Alien nuker. She can make quick work of Puffsley as well as control a ton of the Alien support. Be careful to stall Puffsley so he does not get in her blindspot.
  • Lufalan Pasalan: Outranges Puffsley's Omni Strike and can turn the fish into a pancake in record time. Beware his single target, however, as you must clear out enemies from his way to target Puffsley, else the Star Pengs might push you into a bad position. One of the best units to use in this stage.
  • Mad Doctor Klay: Attacks only Aliens in an Alien-only stage. Make sure to not proc Puffsley's knockback and reset his attack. While Klay might not be able to solo Puffsley, he definitely makes dealing with Puffsley and the support much easier.
  • God-Emperor Ganglion: Deals massive damage to all Aliens present here, as well as being able to hit the backline with his Long Distance if positioned correctly. He can easily abuse the Warp and Knockback effects of the enemies to attack again and again. Just make sure to watch your money before you send him out.



Video Player Notes

The Battle Cats - Blue Impact, Puffer Planet (aka Star Peng purgatory)

Lucas IV A Rich Cat is used in this video.

Battle Cats - Puffer Planet (Puffsley’s Comet) - No Gacha CHEESE ft. Healer Cat

Xskull & Dr. Skull With Rich Cat, high level units.


  • This stage was altered in version 9.1. Before the update:
    • Puffsley's Comet spawns after 10 seconds;
    • Project A spawns after 1 minute;
    • The first wave of Star Pengs appears after 3.3 seconds and has a delay of 20-23.3 seconds between each Star Peng;
    • The second wave of Star Pengs appears after 90 seconds and has a delay of 16.7-20 seconds between each Star Peng;
    • The third wave of Star Pengs appears after 163.3 seconds and has a delay of 13.3-6.7 seconds between each Star Peng;
    • The final wave of Star Pengs appears after 223.3 seconds and has a delay of 33.3-40 seconds between each Star Peng.
  • This is the only Merciless Advent Stage to award a gold Meow Medal.
  • The name Blue Impact is a reference to the movie Deep Impact as they have similar names and for the fact that the movie features a meteorite which is very reminiscent of Puffsley.


Special Stages
Daily Stages
Normal Stages Monday Stage (Rich Cat) • Tuesday Stage (Speed Cat) • Wednesday Stage (Cat Jobs) • Thursday Stage (Sniper Cat) • Friday Stage (Helpful Cat) • Weekend Stage
Blitz Stages Monday Blitz StageTuesday Blitz StageWednesday Blitz StageThursday Blitz StageFriday Blitz Stage
Guerrilla Stages
Cat Ticket Guerrilla Love, Metal Hippoe (Hard)Super Metal Hippoe (Expert)Steel Visage (Deadly)Forged to Kill (Deadly)
XP Guerrilla XP Stage/Weekend StageXP Megablitz!XP ColosseumMerciless XP!The Proving Grounds (First Round (Easy)First Round (Expert)First Round (Deadly))
Catfruit Guerrilla Growing Green (IIIIII) • Growing Purple (IIIIII) • Growing Red (IIIIII) • Growing Blue (IIIIII) • Growing Yellow (IIIIII) • Growing Strange (IRedFloatingBlackAngelAlienMetalZombie) • Growing Epic (III) • 進化の悪マタタビ (IIIIIIIV) • Catfruit JubileeCatfruit Buffet
Material Guerrilla Cavern of Comets (IIIIII) • Island of Ash (IIIIII) • Strait of Wings (IIIIII)
Enigma Guerrilla Isle of the Map Lord (IIIIII)
Cyclone Stages
Solo Fights Attack on R-Cyclone (Expert)Attack on B-Cyclone (Expert)Attack on W-Cyclone (Expert)Oncoming Maelstrom (Expert)Attack on Titanium (Insane)Black Hole Rising (Insane)Oncoming Storm (Insane)Unholy Tempest (Insane)The Wormhole Opens (Deadly)Wrath of Hell (Deadly)Charybdis' Mouth (Merciless)
Dual Fights Bad to Worse (Tragedy in Red (Insane)Doom Paradise (Insane))
Day of Judgement (Explosion in the Sky (Insane)Acts of Cat-God (Insane))
Techneurosis (Nuts 'n' Bolts (Expert)Space is the Place (Insane))
Advent Stages
Solo Fights Tier 1 No Plan A (Deadly)Realm of Carnage (Deadly)Honey Trap (Deadly)Parade of the Dead (Deadly)
N-1 Grand Prix (Deadly)Bombergirl (Deadly)Puffer Planet (Merciless)Flow Like the Stream (Merciless)
Possessed by Evil (Merciless)
Tier 2 The Pure Land (Merciless)Saintly Sister (Merciless)I'll Be Bug (Merciless)Dogsville (Merciless)
Last of the Dead (Merciless)Baby Fake (Merciless)
Dual Fights The Angel & The Demon (No Plan A (Deadly)Realm of Carnage (Deadly)
The Queen & The Dead (Honey Trap (Deadly)Parade of the Dead (Deadly)
The King & The Maiden (N-1 Grand Prix (Deadly)Bombergirl (Deadly))
Crazed Stages
Crazed Cats Dark Souls (Insane)Absolute Defence (Insane)Berserk (Insane)
Festival Gross (Insane)Head Shaker (Insane)Flappy Cat (Insane)
Fish Hell (Insane)Mammals? (Insane)Crazy Cats (Insane)
Manic Cats Deathhawk (Deadly)Vulcanizer (Deadly)Unjust War (Deadly)
Muscle Party (Deadly)Lots O' Lion (Deadly)Forest Beasts (Deadly)
Ogre Island (Deadly)Draconian (Deadly)Resident Feline (Deadly)
Clan of the Maniacs The Wild Dance (Deadly)Insane Rhythms (Merciless)
Awakening Stages
Buyable Cats Actress AwakensKung Fu AwakensMr. AwakensBondage AwakensThe Dom Awakens
Box Cats AwakenPanties AwakensNinja AwakensZombie AwakensSamurai Awakens
Sumo AwakensBoogie AwakensSkirt Awakens
Monthly Cats Adult Cat AwakesEvil Cat AwakesDoll Cats AwakeMaiden Awakes
Koi AwakensBride AwakensVacation AwakesVengeance Awakes
Kung-Fu X AwakensSports Day AwakensSalaryman AwakesReindeer Fish Awakens
Li'l Cats Tiny Meows (Deadly)Tiny Will (Deadly)Tiny Chopper (Deadly)
Tiny Creeper (Deadly)Tiny Horns (Deadly)Tiny Wings (Deadly)
Tiny Fins (Deadly)Tiny Tail (Deadly)Tiny Fists (Deadly)
Cyclone Cats Crimson VengeanceNEO Darkness HeavenPeerless Too
Wrath of the DivineBitter IronyDimension of Delirium
Red Sky At NightThe Dead Keep RollingThe 3rd Dimension
Advent Cats Clionel DominantRiver AcheronQueen's Condemnation
Dead by EncoreKing Wahwah's ReturnA Deeper Dream
Other Cats Tricycle AwakensCat Kart AwakensFlower Cat Awakens!Nekondo AwakensCatburger Awakens
Event All-Stars Stages
Special Thanks! (Insane)Ultra Stress! (Insane)Miracle Tactics! (Insane)Wonderful Conquest (Insane)Elite Corps (Insane)Megaton Blast (Insane)Presents of Mind (Insane)
Memorial Stages
Year's First Dawn • Happy Birthday (IIIIII) • Grats! 3 Years!!Joy of 20 Million!Joy of 30 Million!Joy of 40 Million!CAT DAYJoy & ProsperityJoy of 50 Million!Golden Week Special!!Joy of 60 Million!
Region Restriction
Punchy PrizefighterSecret DelicacyFaster Than Fast FoodWe're Number OneCola Flavor CatWafer Cat Advent
Unknown Schedule
Dark Descent I: Eastern Cave • II: Western Walk • III: Southern Fort • ∞: Northern Crater
Seeing Red I: Sands of the East • II: Wastes of the West • III: Peaks of the South • ∞: Ruins of the North
Duel Stages Duel on the Prairie (VanguardEliteCommander) • Duel at Sunset (VanguardEliteCommander) • Duel Under the Stars (VanguardEliteCommander) • Duel on the Dunes (VanguardEliteCommander) • Duel at the Lava Fields (VanguardEliteCommander) • Duel Under the Sea (VanguardEliteCommander)
Tag Arena Rookie (QuarterfinalsSemifinalsFinals) • Beginner (QuarterfinalsSemifinalsFinals) • Adept (QuarterfinalsSemifinalsFinals) • Pro (QuarterfinalsSemifinalsFinals) • Expert (QuarterfinalsSemifinalsFinals)
Total Wars Spring Special (BasicStandardAdvancedExaltedSupreme) • Summer Special (BasicStandardAdvancedExaltedSupreme) • Fall Special (BasicStandardAdvancedExaltedSupreme) • Winter Special (BasicStandardAdvancedExaltedSupreme)
Deadly Carnival Tornado Carnival (Deadly)Awakened Carnival (Deadly)
Deadly Carnival II Tornado Carnival II (Deadly)Awakened Carnival II (Deadly)
Deadly Carnival III Tornado Carnival III (Deadly)Awakened Carnival III (Deadly)
Heavenly Tower Floor 1Floor 2Floor 3Floor 4Floor 5Floor 6Floor 7Floor 8Floor 9Floor 10Floor 11Floor 12Floor 13Floor 14Floor 15Floor 16Floor 17Floor 18Floor 19Floor 20Floor 21Floor 22Floor 23Floor 24Floor 25Floor 26Floor 27Floor 28Floor 29Floor 30Floor 31Floor 32Floor 33Floor 34Floor 35Floor 36Floor 37Floor 38Floor 39Floor 40Floor 41Floor 42Floor 43Floor 44Floor 45Floor 46Floor 47Floor 48Floor 49Floor 50
Legend Quest LEVEL 1 - LAST LEVEL (randomized SoL stages & lineups)
Citadels Floor 1Floor 2Floor 3Floor 4Floor 5Floor 6Floor 7Floor 8Floor 9Top Floor
Gauntlet Stages
General Baron Seal Strikes Baron Seal Strikes!: Red Alerts 1~20 • Baron Seal Strikes!!: Red Alerts 21~40 • Baron Seal Strikes!!!: Red Alerts 41~60
Le'Grim Strikes Le'Grim Strikes!: Rampage Lv1~20 • Le'Grim Strikes!!: Rampage Lv21~40 • Le'Grim Strikes!!!: Rampage Lv41~60
Mega Menace Mega Menace!: On Mighty Wings Lv.1~20 • Mega Menace!!: On Mighty Wings Lv.21~40 • Mega Menace!!!: On Mighty Wings Lv.41~60
Horrorpotamus Horrorpotamus!: Cosmic Juggernaut Lv.1~20 • Horrorpotamus!!: Cosmic Juggernaut Lv.21~40 • Horrorpotamus!!!: Cosmic Juggernaut Lv.41~60
Seasonal A Colossal New Year!A Colossal Valentine'sSuffering Spring!Summer Break Cats
Monthly June GauntletJune Gauntlet IIJuly GauntletJuly Gauntlet IIAugust GauntletAugust Gauntlet IISeptember GauntletSeptember Gauntlet IIOctober GauntletOctober Gauntlet IINovember GauntletNovember Gauntlet II
Other Special Stages
The Battle Cats POP! Poppin' in 3D!Fight your Friends!Player VS PlayerPay Only Once!No I-A-P!Get Those UbersConquer the GalaxyAt Nintendo eShop!
Mystery Package Sender Unknown
BitSummitBCJP Only Held in Miyako Messe! (2016)Held in Miyako Messe! (2017)Held in Miyako Messe! (2018)One more thing... (2018)Held in Miyako Messe! (2019)One more thing... (2019)
The Battle Cats Together! Play Battle Cats Together!Team Up & Win!Over 350 Cats!Play All you Want!Legend Stages Too!Minigames Galore!At the Nintendo eShop!But the App's Fun Too :)
Most Defeated 2019 Surprising #5Not Uncommon #4As Expected #3Runner-Up #2Unbelievable #1Unseen in 2019
Most Appearances 2020 Congrats on #5#4 As ExpectedSomehow #3#2 Out of Nowhere#1 Thanks to You!No New Appearances
Empress' Research Arcane ConfluenceServant of DarknessDemon's ParkWicked CatWicked TankWicked Axe
Empress' Report Empress' Report 1Empress' Report 2Empress' Report 3Empress' Report 4