hi, I'm very happy you liked the game!
Thanks for reporting this!
It's a known issue with games made with pico-8 that they sometimes get flagged by antivirus. I'm looking into it if there's anything I can do on my end to make this experience better.
In the meantime, if you don't feel safe downloading it, it's available in full above in as a web game. Then there's no download and no virus. The only catch is your save does not carry over.