Behind these simple/short questions, I wanted to know if some of you already planned to make your game 2d or 3d regardless of the theme, and if so, why would that be (tools, knowledge, art, etc…)

I’m leaning towards 3D this time, but it really depends on whatever concept my brain decides on when the theme is announced. Last time, I went with 2D because it took a lot less time and the result looked better (but it was a concept that would have been fine in both 2D or 3D).

As someone who doesn’t like to use pre-existing engines, I would say 2D. Unless you’re in the jam and already have a 3D engine premade, 2D, 2D, 2D. Its quicker to program for, but it takes longer to make assets for (unless you go for a retro style…). Though I’m pretty sure the days you save trying to get 3d working from scratch would be worth it for graphics to take slightly longer.

Short practical answer

Depends on what software you use and your experience using it.