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Steam News30 November 20257mo ago

The Kitty-mas Update is here!

Cats vs Rats lovers! It's Kitty-mas! That time of year where you get your cats all kinds of treats and toys that they'll never use. So I figured this year, I'd add some stuff you will use.

In this update7

Full notes

Full Cats Vs Rats update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

2 fixes4 additions10 changes0 removals
  • Gameplay
  • Store
  • Balance
  • Maps
  • Fixes
addedIt's Kitty-mas! That time of year where you get your cats all kinds of treats and toys that they'll never use. So I figured this year, I'd add some stuff you will use. Let's see what Developer-claus has in their sack of toys:
changedItemsGiant Rat Spray Deal +20% Damage to Bosses (Yes this also applies to the brain bucket enemies)
addedItemsBroken Lava Lamp Kills now have a chance to spawn a pool of hot magma Enemies within the pool will take massive damage and have stacks of the fire debuff applied to them
changedItemsBouncy Yarn Balls Hits have a 12% chance to spawn a damaging yarn ball
changedItemsHealth Plus (For Cats) Increases healing from all sources by 9%
addedItemsJury-Rigged Shock Collar Critical hits now have a 28% chance to shock and push enemies The push from this item is a little smaller than the one created by the Spray Bottle

Cats Vs Rats changes

addedIt's Kitty-mas! That time of year where you get your cats all kinds of treats and toys that they'll never use. So I figured this year, I'd add some stuff you will use. Let's see what Developer-claus has in their sack of toys:
changedGiant Rat Spray Deal +20% Damage to Bosses (Yes this also applies to the brain bucket enemies)
addedBroken Lava Lamp Kills now have a chance to spawn a pool of hot magma Enemies within the pool will take massive damage and have stacks of the fire debuff applied to them
changedBouncy Yarn Balls Hits have a 12% chance to spawn a damaging yarn ball
changedHealth Plus (For Cats) Increases healing from all sources by 9%

Cats vs Rats lovers!

It's Kitty-mas! That time of year where you get your cats all kinds of treats and toys that they'll never use. So I figured this year, I'd add some stuff you will use. Let's see what Developer-claus has in their sack of toys:

New Content

Items

  • Giant Rat Spray

    • Deal +20% Damage to Bosses

    • (Yes this also applies to the brain bucket enemies)

  • Broken Lava Lamp

    • Kills now have a chance to spawn a pool of hot magma

    • Enemies within the pool will take massive damage and have stacks of the fire debuff applied to them

  • Bouncy Yarn Balls

    • Hits have a 12% chance to spawn a damaging yarn ball

  • Health Plus (For Cats)

    • Increases healing from all sources by 9%

  • Jury-Rigged Shock Collar

    • Critical hits now have a 28% chance to shock and push enemies

    • The push from this item is a little smaller than the one created by the Spray Bottle

Cosmetics

  • All Kitty-mas seasonal cosmetics have a very small chance of being earned for each rat slain

  • Santa Hat

    • Some cats love milk and others hate it; they are united in one commonality -- lactose intolerance

    • This is unlocked immediately for all players upon logging in!

  • Kitty-mas Tree

    • "It's because I'm green isn't it?"

  • ???

    • Y'know, in some games, this hat would cost upwards of $3,000+...

    • You'll find out what this is when you unlock it... (oooh, suspense...)

Leaderboards

  • Introducing global leaderboards!

  • You'll now be able to compete with all other players in the world for the top 50 spots on three leaderboards:

    • Highest Score

    • Highest Stage

    • Fastest Final Boss Defeat

  • Unfortunately, all previous scores and runs will not be counted. All complaints will be warmly received here:

Menu

  • The main menu is all decorated for Kitty-mas! You'll notice a brand new backdrop and festive theme

Enemies

  • The base rat wanted to show its seasonal cheer, and decided to don a cute festive hat

Balance Changes

Enemies

  • Mine Rat

    • Yeah, these guys were putting out way too many mines haha

    • Lowered max mines that can be held at a time from 3 -> 1 on Kitten and Feral, and 6 -> 2 on Sphinx

    • Increased time between mine replenishments on all difficulties

Bug Fixes

  • Enemies can now be booped again

    • Previously, boops from items like the Spray Bottle wouldn't move enemies at all

  • Fixed an issue with activating shrines and obelisks on mouse and keyboard

Have a very merry Kitty-mas!

Source

Steam News / 30 November 2025

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