- Update for September 28, 2026 - 27 September 2026
The following adjustments have been madeMade the News section display easier to understandMade the UI for launching Steam from Sill Cats easier to understandSlightly adjusted unnatural cat behaviorAdjusted missing display items, garbled text, and similar issues in the settings screenFixed situations where cats would occasionally stop movingImproved stability when using multiple monitors of different sizesFixed an issue where the values on the Record page could become incorrect when the month changed while Sill Cats was running
- Our Sister App Sill Dogs Is Out Now! - 23 September 2026
To all cat lovers:We're happy to announce that our sister app, Sill Dogs, has been released.Cats are adorable in their carefree way, but a dog's loyalty is pretty wonderful too.The dogs in Sill Dogs might actually listen to you better than cats do!?It's also free to download, so please give it a try.It may take a little while, but we're also working on letting the cats of Sill Cats and the dogs of Sill Dogs recognize each other, so please look forward to it.
- Update for September 7, 2026 - 6 September 2026
The following adjustments have been madeFixed an issue where the cats would disappear right after startup on some systemsFixed an issue where the cats would sometimes not appear after waking from sleepAdded the ability to erase all settings and records and then exitAdjusted the wording around the notices in the settings screen
- We asked the cats to be a little more active - 4 September 2026
In this update, we let the cats know the following.• Cats that do not act very actively should be a little more active• Cats that hardly sleep should sleep a little moreAs a result, how often they jump and how long they sleep have become more cat-like than before.We have also strengthened the differences in behavior that come from personality, and adjusted some issues.About the adjustments to issuesIn some environments, when the cat scaling feature was in use, the height of the cat's jump was not calculated correctly. We have fixed this.With this update, cats have become considerably more inclined to sleep. Cats are creatures that sleep a lot by nature, but if you have gone to the trouble of starting your PC and launching Sill Cats, you may want the cats to move more. At the moment you can wake a cat by hitting it with the soccer ball, but since it is a pity to keep hitting them with th…
- We've released a bundle with Eye On The World! - 2 September 2026
Today we released a bundle with Eye On The World, an exploration game where you find cats in a diorama made of voxels.Be sure to explore its finely crafted voxel world and look for the cats hiding here and there.
- Update for September 1, 2026 - 31 August 2026
The following adjustments have been madeAdjusted some wording in the settings screenThe cats were hardly sleeping at all, so we asked them to sleep a little moreSometimes you just feel like stopping the fan, so now it stops when you click it
- You can now change the settings window design - 26 August 2026
With this update, you can now change the design of the settings window.Until now there was only one dark design, but you can now also choose bright and cute designs, so please find the one you like best.The designs available now are as follows.Midnight (the design you have had until now)Night CatsKitten CafePaw PrintsOrigamiCat KomonNeonRetro GameDaylight
- The toy mouse has been added! - 26 August 2026
We are working on a new toy.We told you that a while ago, and now the toy mouse is here. You can use it from the free Toy Pack DLC.Double-click the toy mouse and it starts running. When you want to catch your cat's attention, try setting it running nearby. Sometimes your cat will ignore it, but that is what cats are like, so please forgive them.We have also made the following adjustments.Cats no longer swish their tail too muchEnergetic cats are now even more energetic
- Update for August 23, 2026 - 22 August 2026
Improved the app's stability when it cannot connect to Steam.Adjusted in-app announcements so they do not appear too frequently.Fixed an issue where, on some systems, a small window could briefly appear when quitting the app.
- Update for August 19, 2026 - 19 August 2026
The following adjustments and fixes have been made.Fixed an issue where it took a long time to close the app when quitting itAdjusted the logic by which News published after an update is reflected on the cat signboard.Fixed an issue where, under “Toys” in the Settings screen, the summer toys could stop being shown and not come backReorganized part of the display of the Settings screenOther minor bug fixes
- The bundle with Weyrdlets 2.0 is now available! - 19 August 2026
Cat lovers, we're pleased to announce that a bundle pairing the popular desktop pet app Weyrdlets 2.0 : Desktop Pets with Sill Cats - Cat Pack 3 and Sill Cats - Summer Splash Pack is now available.Weyrdlets 2.0 : Desktop Pets lets you keep an adorable pet right on your PC desktop and play with it.Be sure to check it out as well!With this bundle you can buy Weyrdlets 2.0 : Desktop Pets, Sill Cats - Cat Pack 3 and Sill Cats - Summer Splash Pack together at a discounted price.
- You can now look back on the time you've spent with your cats - 18 August 2026
We've added a “📖Record” page to the settings screen.The record of the time you've spent with your cats since 18 June 2026 can now be viewed in the settings screen.Time spent with your cats, tendencies by time of day, the cat you've been with the longest, a ranking of “time spent together” for each cat (top 20), jumps and distance walked, how many times they responded to your clicks, how many cats you've named, and more.Cats walk a lot further than you'd think.About how the time is countedIt is counted differently from Steam's playtime. Recording began with the update of 18 June 2026, so playtime and other figures from before then are not counted. Time when the cats aren't on screen isn't counted either — while the PC is asleep, just after startup, at shutdown, or while the cats are being swapped.Other updatesAchievement improvements- Adjusted how the time is calculated when two cats of…
- Sill Friends - Complete Bundle is now available - 18 August 2026
Thank you for playing Sill Cats. Today we released a bundle set that lets you buy every app and DLC in the Sill series together at a set discount.You can get all the DLC for Sill Cats and all the DLC for our sister app Sill Sticks for 20% less than buying them individually.Please take this opportunity to check it out.
- Update for August 14, 2026 - 13 August 2026
The following adjustments and fixes have been made.Added “Sunflower in a Vase” to the free Basic Toy Pack. You can show it from “Toys” in the Settings screen. It sometimes sways in the breezeReorganized the menu in the Settings screenMade it possible to show the cat signboard again from the system tray menu while it is hiddenFixed an issue where some text was displayed in Japanese even in languages other than JapaneseFixed an issue where the News content was not updated when the DLC ownership status changed while the Settings screen was openFixed an issue where “Put away summer toys” also removed the Golden Lucky Cat located in a different sectionFixed an issue where leaving the cat details screen open stopped the cat from moving or cleared the name being enteredFixed an issue where the intended items were not shown under “Display Settings” in the system tray when there was only one mon…
- Update for August 11, 2026 - 11 August 2026
We have made the following adjustments and fixes. • Fixed an issue where, when using multiple monitors, a cat vanished in the middle of the screen on exit and it took a long time to quit • Fixed an issue where quitting while a cat was playing with the soccer ball made the cat vanish without saying goodbye • Fixed an issue where the soccer ball sometimes could not cross the boundary between monitors • The news balloon now flies up to the top of the screen after it leaves the cat signboard • When target displays are selected, the Ice Cream Cart no longer drives across a display you have not selected • Stabilized DLC ownership detection and achievement unlock detection • Other minor bug fixes
- Today, August 8, is World Cat Day! Claim your special item and achievement! - 8 August 2026
To all cat lovers, today, August 8, is World Cat Day! To mark it, we are giving a special achievement and a special item to everyone who plays Sill Cats today.You can earn the same achievement by launching the app on August 8 next year as well. We plan to change the special item every year, so this year's World Cat Day special item can only be obtained this year.Be sure not to miss out on them!
- Update for August 8, 2026 - 7 August 2026
Added News inside the app. When there is a new announcement, a balloon floats above the signboard. Clicking the balloon opens the News section in the settings window. When there are no unread announcements, links to the 3 most recent announcements are shown. The following adjustments and fixes were also made. • Changed the in-app popups so that the Windows alert sound no longer plays • Set the number of cats to 2 for new installations • On the first launch, the confirmation asking whether to enable auto-start is now shown only once • Added farewell and entrance animations when changing the breed, giving a name, calling a cat back, and saying goodbye • Fixed a bug where a cat could stop moving while leaving the screen • Other minor bug fixes
- A bundle with Tiny Pasture is now available! - 5 August 2026
To all cat lovers: we would like to announce that a bundle of the popular desktop mascot app Tiny Pasture and Sill Cats - Cat Pack 3 has now started.Tiny Pasture is an idle desktop app in which you can raise all kinds of cute little animals near the bottom of your PC screen.We are sure that everyone who enjoys Sill Cats will like Tiny Pasture too, so please do take a look.With the bundle, you can purchase Tiny Pasture and Sill Cats - Cat Pack 3 together at a great discounted price.
- July 27, 2026 Update - 27 July 2026
Adjusted Sill Cats so that Windows notifications are displayed correctly when needed at startup. Renamed some achievements to make them easier to understand. Fixed other minor bugs.
- Now Supporting International Cat Day on August 8! - 26 July 2026
We have released the following update.Support for International Cat Day on August 8 Added 9 new achievements, including ones related to International Cat DayWe have also fixed minor bugs and malfunctions.
