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Windows .zip, ARM64 (no install): ColdOpen-0.1.0-alpha.3-windows-arm64.zip, 9.4 MB.
If it doesn't start in a moment, download it here.
Next: install it
- Unzip it anywhere.
- Run
Cold Open.exe. If SmartScreen warns you, click More info, then Run anyway.
The full steps are in Install, with how to check the file against its checksum.