Creating a 3D world for a 2D game: better to do it all in 2D or 3D?

I would like to make a 2D game in which the player can walk left or right along streets (please excuse the terrible artwork… it was just to get an idea!).

I would like the player to be able to walk ‘around the block’ (using ‘up’ when at the end of the street), and to cross the street, walking on the other side of the road.

I’m wondering whether it would be better to create each side of each street as an individual 2D scene, or create the whole block (or even town) as a 3D image.

Any advice would be much appreciated!

(Edit: I’m assuming that the 3D world method would use more memory, processing, or whatever), but the 2D method would require a new scene be loaded every time (which could get frustrating if the load time is too long?). The game would be a mobile phone game.)

Hmm, this is looking kind of like an opinion thing? It would depend on the kind of style you like. If it were a 3D scene (even with 2D art), you could make some kind of nice camera transitions to the different views or parts of the streets. In strictly 2D, transitions would be limited, but the artwork would be potentially easier to set up. You should probably think about more exactly how you want the game to look when “finished”. Like the kind of transitions there are, are there any parallax effects, and so on.

Personally, I’d probably go with a 2.5D world. So, a 3D environment with 2D sprites. Kind of like what Paper Mario did. The perspective of your image would make me want to try for 2.5D firstly, and I’ve always liked Paper Mario, so yeah. That’s what I would do. But doing only 2D scenes I think would be the easier way to go. Again, depends on what you want.