There are few sites which suggest they offer some kind of download; red flags
for spam phishing malware adware, etc. abound. I'd done a time consuming
search and found a few things in reference. About half hour, didn't click many
sitesmost did not appear trustworthy. ~ Some, totally blocked in latest Firefox.
My starting point:
https://duckduckgo.com/?t=ffab&q=Geometry+Dish+on+Mac+v2.1&ia=web
And continued for more than an hour; looked into a dozen site pages. Clicked
nothing inside, downloaded nothing; ran no untested content. (Safe browse.)
One that runs online? suggests: you go to google store; and get android app
to translate and enable the Mac version to run in emulation mode. (slower?)
Found mention of this, no guarantees, from here:
https://easynew279.weebly.com/geometry-dash-mac-free.html
A few consider to have you play this online; assuming high bandwidth demands
w/ other considerations; those versions likely can be tainted &/or untrustworthy.
An iOS app store (GB) version, presumably for iPad and iPhoneOS, could be safest.
• Geometry Dash on the App Store (GB)
https://apps.apple.com/gb/app/geometry-dash/id625334537
Anything hacked or otherwise 'cracked' into, automatically is suspect to be bad.
Sorry to not be of much help. I'm here as private individual w/ volunteer status.
Few participants in ASC tech communities would use or try most of this junk.
Most of this isn't worth disabling iOS or macOS security either. A word to Wise.
Good luck & happy trails!🌞🎣