I'm a sandbox gamer at heart too, but I don't have a problem with the title. It's a joke, guys.
Also, everyone who likes video games at all should really try Portal. A fantastic little 3D puzzle game, with a great story, available for Linux/macOS/Windows, and currently 99 cents on Steam. And if you play it, you'll understand
https://www.xkcd.com/606/
Finally, I love solo adventures. So insta-buy.