It's always fun seeing something actually move in an idle game. You can actually see the guy rolling stone and I'm happy to say that there's no ending. Sisyphus will always be rolling, both up and down. There's also weathers that affect speed, but I've only seen clear skies and snow. And if you go fast enough, the game shows particle effects that go zoom.

Well, there's the 100km "upgrade" that's effectively the end, but that's about it. The sugar rush upgrade practically doubles your speed randomly, and other upgrades help you in some way in rolling the stone faster, if just a little. You also can't save, but you can just leave this game on and come back to 100km (with.. some upgrades).

And all of that was just my nitpicking. I thoroughly enjoyed this game. The endgame is just waiting since by that point, upgrades only give you a tiny boost. It's better to just wait out the 100km instead of constantly upgrading. Again, this is made for a game jam, so don't expect too much from it, but it's still worth a play if you can leave the guy rolling in the background.