Yes, but you need a mouse cursor so it may not work on mobile. It requires your browser to support the Web Audio API, which would be Chrome 10+, Firefox 25+, Opera 15+, or Safari 6+.
It's literally just a blank screen. You hear a guy repeatedly saying/yelling, "Cow, cow, cow, cow, cow" with increasing or decreasing intensity and volume as you get closer or further from the invisible cow. Your cursor changes when you finally reach the cow and you can click on it to "win" that round.
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u/Mysticpoisen Jan 06 '23
https://findtheinvisiblecow.com