I think only fellow Indians or lawyers could properly answer so I probably shouldn't even chime in, and if you want to be 100% sure you need to contact an Indian lawyer, but as far as I'm aware under the
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just sharing porn/obscene material electronically is illegal. So by putting your game out there are you are committing a crime.
However it's fair to assume if you aren't making money of it(and aren't actively advertising it in India or as an Indian product) nobody would ever care. I mean I've seen plenty of Indian amateur porn around after all.
If in doubt, don't monetize it. Everything you make on platforms like Patreon has to be taxed, and if the government or law ever get curious there will be a clear and easy to follow paper trail in how you made that money. And if you want to try and avoid that paper trail you are just adding tax-evasion onto the list of crimes to get caught for.
But again, I'm not from India so I don't know how much the laws are actually enforced outside of major players.