Board Game Arena

I was curious about this. The game is marketed as 2-4 players, and there's only one fan-based solo on Boardgamegeek.com. It doesn't match the solo here, which I just tried. It seems that it's set up essentially as a 3D puzzle? See how many buildings you can connect for a high score? Is that right?

I thought it was cool that this option was added by the developer.

Yeah that's right. Solo mode here is the regular game without any rules changed. It will lack the (minimal) player interaction in the game - no one will take tiles you hoped for and the number of available walkways is not as limiting.