Sill Cats
Tiny cats have moved into your desktop. They pad around the screen, bat at your cursor, curl up to sleep somewhere, and suddenly break into a sprint in the middle of the night. Dote on their delightfully cat-like antics. Adopt two cats for free.
Estimated lifetime revenue
Free-to-play
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. The player count below is how many people own it, not what they spent.
Est. players
29.1K
people who own it
Reviews
589
Review score
93%
9.3/10
Concurrent players
1.2K
read Sep 18, 2026, 15:00 UTC
Followers
About
About the game
Sill Cats is an always-on desktop app in which tiny cats move into your computer's desktop.
They pad along the tops of your open windows, curl up and sleep soundly in some corner, and perk up—"what's that?"—when your mouse moves. At 2 in the morning they'll suddenly tear across the screen at full speed. Yes, they really do get the zoomies. If you've ever had a cat, you'll probably just get it.
What these cats are like
The whole desktop is their walking course — they stroll leisurely all over your desktop
Jumping onto windows — they explore your workspace as they please
Curious about the cursor — when the mouse moves, they might quietly sidle up… or might not
Click to play with them — one click to catch their eye, two for a reaction, three and they just might actually play with you
Their mood shifts with the time of day — liveliest at dawn and dusk, and utterly lazy at midday (this is what's called being "crepuscular")
Late-night zoomies — a sudden sprint around 1–4 a.m.; count yourself lucky to catch it
Fine with a big screen — no matter how many monitors you have, every one becomes part of the cats' walking course
They usually stay out of your way, but every now and then they'll bat at your cursor. Please cut them some slack there. They're cats, after all.
If you find a cat you love, give it a name and make it your very own.
Adopt two cats for free
Sill Cats is free to start. The first two you can adopt are a sleek Abyssinian and a dashing Tuxedo. Once you're smitten, you can grow the family through breed packs. Even mulling over which one to welcome first is part of the fun.
By default, one cat is shown. If you'd like two on screen at once, click the cat signboard, or right-click the icon in the Windows system tray and adopt one from the menu.
About additional cats
Purchasing DLC adds more cat looks and breeds you can choose from.
Cat Pack 1 — Adds 6 breeds of cat, including shorthairs and longhairs.
Cat Pack 2 — Adds 4 bobtail cats, distinguished by their short tails.
DLC adds the cat looks and breeds you can choose from.
It does not raise the maximum number of cats that can appear on screen at once.
Sill Cats also offers a variety of cat toy DLCs to liven up your screen.
There's a free "Basic Toy Pack" as well, so please start there.
How to set things up
Changing the cat breed, quitting the app, and adjusting the various settings are all done from the settings menu.
Click the cat signboard, or right-click the Sill Cats icon in the system tray, to open the settings menu.
If you can't find the icon, check the hidden icons via the "^" button at the bottom-right of the screen.
Up to two cats can be shown at once.
※ If you spot a bug, it would be a great help if you reported it on the discussion boards in the "Community Hub."
Development roadmap
We have the following updates planned going forward.
【Feature additions】
・Adding more cat toys
・Adding more cat gestures
・Adding more cat breeds
・Adding a feature to pet the cats
・A feature that randomly rotates which cats appear on screen
and more
※ Planned content may change depending on the state of development.
※ More detailed plans are announced on the discussion boards in the Community Hub.
Streaming policy
You are free to stream and post videos of this game, monetized or not. No prior permission or notice is required.
You don't have to tell us, but we'd be delighted if you did. A heads-up on Discord or X (formerly Twitter) is a big help. You can find our Discord and X accounts from the store page. We'd also be thrilled if you put the store page URL in your stream or video description. If we know ahead of time, we may be able to help promote your stream.
That said, please refrain from streams that fall under any of the following:
・Illegal streams
・Streams contrary to public order and decency
・Streams that promote violence or discrimination
・Streams based on specific political or religious claims
・Any other streams deemed inappropriate by common-sense judgment
Even if a stream does not fall under the above, we may ask that any stream we deem inappropriate be stopped or taken down, regardless of the reason.
As long as you're streaming and having fun, there's no problem at all. We look forward to your streams!
