HomeGamesUpdatesPricingMethodology
Steam News21 October 20258mo ago

Update 1.0.0.4 is now available!

Hello everyone! I've been working hard on a big content update for "Kill a Million Rats", and it's finally live!

Full notes

Full Kill A Million Rats update

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

Repeated intro

Hello everyone! I've been working hard on a big content update for "Kill a Million Rats", and it's finally live! Here's a list of the major changes:

What changed

0 fixes3 additions1 change1 removal
  • Gameplay
  • Balance
addedNew Combat Progression
addedInstead of obtaining a single combat upgrade at the start of each wave, you now collect experience orbs (in classic survivor-style) from dead rats. The total number of upgrades over a single run has been increased due to this, so I've added a bunch of smaller repeatable upgrades too! Boss Behavior Overhaul
removedGiant Rats no longer have automatic invulnerability windows at HP thresholds! All their attacks have also now been reworked to encompass a wider variety of special attacks. Fighting these guys should now feel much more challenging but fair. Villager Buff
changedVillagers have been buffed to be much sturdier, and can take a lot more damage before going down. Village Bell HP Bar
addedI've added a HP bar for the Village Bell in the upper right corner, so it should be easier to determine how much damage it's taken. Putting it together with your own HP/Hearts makes it easier to tell your current position at a glance. Let me know in the comments if you enjoyed this free content update, or if you have any suggestions for future improvements! Lots of love,

Kill A Million Rats changes

addedNew Combat Progression
addedInstead of obtaining a single combat upgrade at the start of each wave, you now collect experience orbs (in classic survivor-style) from dead rats. The total number of upgrades over a single run has been increased due to this, so I've added a bunch of smaller repeatable upgrades too! Boss Behavior Overhaul
removedGiant Rats no longer have automatic invulnerability windows at HP thresholds! All their attacks have also now been reworked to encompass a wider variety of special attacks. Fighting these guys should now feel much more challenging but fair. Villager Buff
changedVillagers have been buffed to be much sturdier, and can take a lot more damage before going down. Village Bell HP Bar
addedI've added a HP bar for the Village Bell in the upper right corner, so it should be easier to determine how much damage it's taken. Putting it together with your own HP/Hearts makes it easier to tell your current position at a glance. Let me know in the comments if you enjoyed this free content update, or if you have any suggestions for future improvements! Lots of love,

New Combat Progression

Instead of obtaining a single combat upgrade at the start of each wave, you now collect experience orbs (in classic survivor-style) from dead rats. The total number of upgrades over a single run has been increased due to this, so I've added a bunch of smaller repeatable upgrades too! Boss Behavior Overhaul

Giant Rats no longer have automatic invulnerability windows at HP thresholds! All their attacks have also now been reworked to encompass a wider variety of special attacks. Fighting these guys should now feel much more challenging but fair. Villager Buff

Villagers have been buffed to be much sturdier, and can take a lot more damage before going down. Village Bell HP Bar

I've added a HP bar for the Village Bell in the upper right corner, so it should be easier to determine how much damage it's taken. Putting it together with your own HP/Hearts makes it easier to tell your current position at a glance. Let me know in the comments if you enjoyed this free content update, or if you have any suggestions for future improvements! Lots of love,

-nerdook

Source

Steam News / 21 October 2025

Open original post

Changelog.gg summarizes and formats this update. How we read updates.