Is it a Sin to play God?

Playing God would be making a man from clay or making a woman from a man's rib.

What you refer to is something that the people who adopted and adapted the creation story in Genesis wouldn't have conceived of, so wouldn't have imagined God doing.

Now we understand so many more concepts of how nature works, such as space-time, expanding finite but unbounded universe, Big Bang, evolution, quantum mechanics, and so much more. But the Genesis attempt at explaining how the world came into being, and why people have to work to survive and suffer illness and death, was a step on the road to reaching today's knowledge. And today's knowledge will be a step on the way to future understanding for which we may not have concepts today.

Sin is a fictional concept made by religion to control.

No one I know plays an imaginary being

'Is it a Sin to play God? You betya my friend. "For my thoughts are not your thoughts, neither are your ways my ways", saith the Lord.For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.

"Is it a Sin to play God?"

no. god doesn't exist, and "sin" is made-up cult bullsiht.

It's ok

the bible doesn't have any verses against those things so.......