The game is too big to fit in my browser, and when I try to zoom out, the text stays the same size making it unreadable.

Cute use of the theme! And a pretty simple but solid endless runner. I think it's a little on the easy side, as it's very easy to build up a lot of momentum and get to the point where Sisyphus can't really catch up to you; I'd also have liked to see different kinds of obstacles and challenges beyond just the rocks and the trees.

Hah, I love the concept of Sisyphus’ rock having consciousness, and its sole purpose being to roll away from him. Jokes aside, this is a solid implementation - it’s good that the rock wraps around from side to side if you go out of bounds! I’d have either limited the maximum speed of the rock a little, or made Sisyphus faster - because once you get the ball rolling (literally), it’s very hard for him to catch up and pose a threat.