Most authentic Sisyphus simulator I've played. I've completed it twice on casual - I was wondering if it would be easier the second time but I guess rolling that boulder up that hill brings a fresh set of challenges each time :)
The physics are rock solid, the graphics are great. I do think the wind is non-obvious at first but it works.
I tried to think of it as a puzzle but it looks so good I think I just wish it was more of an action platformer, and that the boulder mechanics were an enabler more than a hinderence. I totally get what you've done with it though and it's a perfect execution for it. Crazy impressive you invented a programming language and wrote a computer for it too.