Last time I played SkiFree was probably over 30 years ago, so my memory might be hazy, but this feels like an excellent port. Impressive work. Somehow I remembered there being sound and music, but I guess that wasn't the case actually.
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It wasn't originally released with sound but recently it was discovered that the win32 version supported sound. https://foone.wordpress.com/2017/06/20/uncovering-the-sounds-of-skifree/
I'm currently working on support for the sound effects. Hopefully I'll release an update soon. I also want to add Joystick support. :)