Hi jl
My understanding is Windows is withdrawing it's support for Windows 7 in 2020.
What this means is no further security updates will be made available to you and support will end.
Your system including your game as far as how it functions is not affected by this.
Your system being connected to the internet will however be at risk
Microsoft might offer a free update again to Windows 10 which would need to be considered unless you can permanently remove the internet connection when the time comes.
Peter
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