KairoWindows 10 and 11 · 64-bit · v0.4.29
Download Kairo.
Free, no account required. The app updates itself once installed.
Windows will warn you, and here is why
Kairo is not code-signed yet, so SmartScreen shows "Windows protected your PC" and names an unknown publisher. You would click More info then Run anyway - but please read what that warning means first and make sure you got the installer from this site. Being told to click past a security warning is exactly what malware asks for.
What you need
| Requirement | Detail |
|---|---|
| Operating system | Windows 10 or Windows 11, 64-bit. There is no macOS or Linux build. |
| Disk space for the app | Roughly 400 MB installed, plus the bundled catalog. |
| Disk space for games | Whatever your games need, several times over during install. Kairo checks before starting. |
| Archive tools | Bundled. Installing 7-Zip additionally covers every format Kairo supports. |
| Account | None. Nothing to register, nothing to sign in to. |
| For mods | Vortex, or your own personal Nexus API key. See Mods. |
What happens, step by step
- Download the installerA single
.exe, roughly 109 MB, from Kairo's official releases. - Get past SmartScreenMore info, then Run anyway - after checking you downloaded it from this site.
- Choose where Kairo installsThe application itself. Your games go somewhere separate, chosen later.
- Read the first-run notesKairo shows where games will go, where temporary downloads live, whether your PC can extract every archive format, and what it will never do.
- Pick your foldersA library folder and a temporary folder. Both can be changed later in Settings.
Kairo keeps itself current
How it works
Kairo checks for a newer version and tells you when one exists. Downloads are not started automatically - you choose when to fetch and when to install.
What is verified
Every update is checked against a published SHA-512 checksum before it is installed. A file that does not match is refused.
Every released version is listed in the release notes, including what changed and any known gaps.
Uninstalling
Kairo uninstalls through Windows Settings like any other application. Two things worth knowing before you do:
- Games you installed are not removed with the app - they stay in your library folder until you delete them yourself
- Removing a game from inside Kairo deletes its folder permanently and does not use the Recycle Bin, which the confirmation dialog states plainly
Ready when you are.
If something goes wrong, the report form goes straight to a private review queue.