I couldn't resist: after having so much fun with Pro Pinball Big Race USA, I just had to get Fantastic Journey, the other Pro Pinball game from GOG. I'm a big steampunk fan, too, so the theme was right up my alley.
The reviews were right: it's not nearly as good as Big Race USA, but it's still a whole lot of fun. What's more, like its cousin, it runs perfectly on Ubuntu under Wine.