Battle Cats Wiki

Realm of Carnage (Deadly) is an Advent Stage appearing on the 11th, 12th, 25th, and 26th of every month. When clearing the stage, there is a chance to unlock Express Cat. This is a No Continues stage.


  • 1 Hannya spawns as the boss after 10 seconds300f.
  • 3 Ginger Snaches spawn after 26.67 seconds800f, delay 4~6 seconds120f~180f.
  • 4 Ginger Snaches spawn after 40 seconds1,200f, delay 2~3 seconds60f~90f.
  • 2 Ginger Snaches spawn after 80 seconds2,400f, delay 5.33~8 seconds160f~240f.
  • 3 Ginger Snaches spawn after 100 seconds3,000f, delay 2.67~4 seconds80f~120f.
  • 1 Ginger Snache spawns after 133.33 seconds4,000f.
  • 2 Ginger Snaches spawn after 160 seconds4,800f, delay 3.33~5 seconds100f~150f.
  • 1 Bore spawns after 33.33 seconds1,000f.
  • 1 R.Ost spawns after 83.33 seconds2,500f.
  • 1 Bore spawns after 133.33 seconds4,000f.
  • 1 R.Ost spawns after 200 seconds6,000f.
  • 3 Sir Seals spawn after 233.33 seconds7,000f, delay 33.33~50 seconds1,000f~1,500f.
  • Infinite Bores spawn after 283.33 seconds8,500f, delay 166.67 seconds5,000f.
  • Infinite R.Osts spawn after 366.67 seconds11,000f, delay 166.67 seconds5,000f.


The key of the stage is to kill the Bores and R.Osts quickly in order to whittle down Hannya's health before another Bore/R.Ost can spawn. Since this stage mostly focuses more on how strong your units are, anti-Red Uber Rare Cats also work great here, like Kuu. However, you will also need ranged units to take care of R.Ost, such as Dragon Cat or Crazed Dragon Cat.

Recommended Units

The following cats are basically required for some strategies, or at least can make the stage much more manageable.

  • Island Cat: One of your main attacking forces if you don't have any decent Ubers. Can be replaced with a hypermaxed Manic Island if yours isn't a high-enough level.
  • Manic Island Cat: Combining monstrous stats for an extremely low cost, Manic Island Cat is a central part of beating this stage. At level 40 with some strong up combos, it can one shot the Ginger Snaches.
  • Roe Cat: Can effectively stall Hannya because of their humongous health against red enemies. Their weaken can also help certain units like Awakened Bahamut or Greater Balrog to tank extra hits, although it is rather unreliable.
  • iCat: iCat requires very good timing and either the speed up talent or, RNG-dependent, Roe's weaken to work. With one of these two options, it can rush down Hannya and freeze the boss, giving other units time to get more damage in. Despite its difficulty to use effectively, iCat can still make this stage much more manageable than before if it is able to land a hit.
  • Elemental Duelist Cat: Can be a very useful asset in rush strategies if you boost him to level 33 or higher, as that allows him to survive a hit from a weakened Hannya, if you are also using Roe Cat.
  • Cutter Cat: Can quickly do great damage to Hannya. Pretty self-explanatory.

Recommended Ubers

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

  • Pai-Pai: The designated "counter" to the stage. Soaks up hits like no tomorrow and can make short work of both Bore and Hannya. Immunity to Hannya's weaken means she can get right up without any real danger. Her range also allows her to act as support against R.Ost.
  • Tesalan Pasalan/Lufalan Pasalan: A sure-fire way to get rid of a Bore or R.Ost. Sadly does not outrange Hannya but can still guarantee a quick kill on the support to give you more breathing room.
  • Tropical Kalisa: Excellent nuker against both Hannya and Bore. If timed correctly she can put on some major damage to the boss. Just be sure to time her correctly...
  • Eva Unit-02: Better in True Form, is able to dish out massive damage to Hannya and Bore while also being able to tank some hits from Hannya and can even hit Hannya from behind a Bore / R.Ost if positioned correctly.
  • Greater Balrog Cat: Only works in true form, and if boosted to minimum level 40. Can easily take out the bore with the help of roe cat. At higher levels can can tank R.Ost hits. Since he is immune to weaken, even landing 1 shot on Hannya is devastating.
  • Kuu: Due to her getting Weaken Immunity, she can deal good damage to Hannya easily, making her a solid choice to defeat him quickly.
  • Any EPICFEST Ubers: Would do well against the R. Ost.

Strategy 1

Lineup: The best set of raw power related Combos you have (Seasons of Love/Three Kings/Lion King recommended), Dragon Cat (unless included in the Combos), Eraser Cat*, Crazed Whale Cat*, Island Cat*, Crazed Dragon Cat, Awakened Bahamut Cat. Combos may be replaced by other Cats such as Cutter or Roe.

*must be at a high level (at least 20+35 for Normal Cats, 30 for Crazed Whale Cat), True Form if possible.

Battle Items: Rich Cat (optional but helpful), Treasure Radar (only if you're sure you can beat the stage).

Start off by deploying some Crazed Whales to stall Hannya, while also upgrading your Worker Cat to Level 3 or 4.

Bore phase: When the first Bore arrives, use Island and Crazed Whale to stall and continue slowly upgrading your Worker Cat. Killing the Bore before R.Ost arrives is crucial as dealing with them both will be extremely troublesome, so add Crazed Dragon if needed. When the Bore is defeated, continue deploying Crazed Whales and Island Cat to deal some damage to Hannya.

R.Ost phase: When he arrives, stop deploying them, instead spam Eraser and summon Awakened Bahamut, Crazed Dragon and King Dragon to damage the R.Ost, all while continuing to slowly upgrade your Worker Cat. Awakened Bahamut should easily take R.Ost down if timed well. A good way to do this is to send out one Eraser when the R.Ost is really close (next to your base), and as soon as R.Ost attacks your eraser, send out Awakened Bahamut. Then, spam meatshields after R.Ost gets KB'd. This strategy to time Awakened Bahamut could also be done with thunderbolt for an even easier timing. After Bore's death, start sending only Crazed Whales and Island Cats out to damage Hannya. Repeat the above when the Bores and R.Ost arrive and you should be able to win the stage eventually.

Note: Manage your money properly and do not unnecessarily deploy cats, or it may result in your loss.


  • Crazed Dragon and/or A. Bahamut may be replaced by 1 or 2 adequate Uber Rares, like Pai-Pai Z or Divine Kuu and/or a mid-ranged unit like Cyborg Cat; all that changes is what the bore and R.Ost killers are. Units like Cyborg Cat may work for R.Ost, Kuu is ideal for the Bore, while the likes of Pai-Pai can handle both.
  • Eraser Cat can be replaced by other meatshields, as long as they are strong; Maximum the Fighter is the best choice, but Jiangshi Cat and Crazed Wall Cat/Manic Eraser Cat also work, while 75¢ cats do not.
  • Recommended Combos could be swapped for Attack-based ones, but 90% of the time it is better to go with strength and defense, as units struggle to reach enemies to deal damage in the first place. The only part where damage is better is the Bore, so only use an Attack Up Combo if the Bore can be stalled but takes too long to die.
  • Fried Shrimp Cat/Roe Cat may be added in place of a cat on the first row if a different set of Combos is used or in place of one of the "2 attackers" (Awakened Bahamut Cat and Crazed Dragon Cat), doing so is only recommended if the enemies push so much that the defense isn't enough.
  • Lion Cat and other cats that may be here for Combos should never be used, but a fast unit like lion may still be used for quickly reaching Hannya in case of an emergency, it could be better in some cases and worse in others, but it makes little difference.
  • Less Combo cats for more variance in the army may be a viable strategy, but it is highly unrecommended unless the units one owns don't allow good enough Combos.

Strategy 2 (ft. Healer and Lion)

Lineup: The Gross!!! Cat Combo, any good Uber for R.Ost (really anything that outranges it), Awakened Bahamut (30), Healer Cat CC (30), Lion Cat (20+16), Elemental Duelist (30+1)(Manic Island probably also works), Roe Cat (29+1) and Island Cat (20+18).

Battle Items: Treasure Radar

Cat Cannon: Thunderbolt

Please note that this strategy requires some difficult timing, and may take a few attempts to get right.

Battle: Upgrade the Worker Cat twice, then let the Ginger Snaches hit your base. Wait until you have 7,500¢ in your wallet, then start summoning all your cheap cats (Manic Macho Legs, Macho Leg Cat, Healer, Lion, Elemental, Roe, Island). Healer should eventually freeze the Bore, and Duelist and Island will burst it down. Continue spamming those cheap cats until Bore is dead. Then, this is the most key moment. By now, Hannya should be just far enough away from your stack. This is when the Lion Cats you have stacked behind the Bore rush in to take Hannya's attack. Now, healer should have a clean shot towards Hannya, and freeze it.

Now, You send in Awakened Bahamut to deal a damage knock back to the boss. When Hannya becomes unfrozen again, use Thunderbolt to stop its attack so healer can attack again. Healer then will be able to freeze Hannya again, and another damage knockback is dealt. The boss should be knockbacked, but this time, Healer will be able to freeze it again. You are now free to kill it. With Hannya gone, Awakened Bahamut should land at least one hit against the incoming R.Ost. Then, let your Uber from before finish the job and kill the base.

For the video this strategy is based on, see Hotstika's video in the table below.


Video Player Notes

The Battle Cats - Realm of Carnage (Deadly)

Nurse Wuffa

How to Beat Realm of Carnage EASILY! - Battle Cats (River Styx)


Battle Cats - Realm of Carnage -Deadly- Hannya VS Healer Cat (No Gacha) - River Styx

Hostika No Gacha Cheese, req. Healer Cat CC



  • In the Japanese Version, this is the only Advent Stage whose name does not include the level's difficulty.
  • Prior to April 2017 (February 2018 in the English Version), this stage had no known schedule.
  • The enemy base's HP is composed of two 666s, believed to be the "Number of the Beast".
  • The River Styx is a river from Greek Mythology which marks the boundary between the world of the living and the Underworld.


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) • Growing Evil (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)Aku Reincarnation (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 AwakensBox Cats AwakenPanties AwakensNinja AwakensZombie AwakensSamurai AwakensSumo AwakensBoogie AwakensSkirt Awakens
Monthly Cats Adult Cat AwakesEvil Cat AwakesDoll Cats AwakeMaiden AwakesKoi AwakensBride AwakensVacation AwakesVengeance AwakesKung-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 TooWrath of the DivineBitter IronyDimension of DeliriumRed 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!Q1. Box of Contents QuizQ5. Time Luck Quiz
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
Infernal 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 30
Gauntlet Stages
General Baron Seal Strikes Baron Seal Strikes: Red Alerts 1~20
Le'Grim Strikes Le'Grim Strikes: Rampage Lv1~20
Mega Menace Mega Menace: On Mighty Wings Lv1~20
Horrorpotamus Horrorpotamus: Cosmic Juggernaut Lv.1~20
Seasonal A Colossal New Year!A Colossal Valentine'sSuffering Spring!Summer Break Cats
Monthly January GauntletJanuary Gauntlet IIJune GauntletJune Gauntlet IIJuly GauntletJuly Gauntlet IIAugust GauntletAugust Gauntlet IISeptember GauntletSeptember Gauntlet IIOctober GauntletOctober Gauntlet IINovember GauntletNovember Gauntlet IIDecember GauntletDecember 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 4Empress' Report 5