There’s a sub-genre of puzzle games which involves building things. Most frequently what you build are bridges, hopefully ones which don’t fall down, but there’s a wide variety and what’s pretty consistent between all of these is a realistic representation of physics (within a practical limitation). This used to be quite a novel thing, evaluating forces acting on all of the objects in a scene is more CPU-intensive than was feasible in most games back then, and so games which did this, whether building games or others (they were almost all building games), came to be known collectively as “physics games.”

That’s a terribly poor descriptor nowadays, given that more current games use physics than don’t, but it’s still the moniker given to games in which taking advantage of a physics engine is the focus of gameplay. Fantastic Contraption is such a physics-based building game, though what you build are… cars. I’m going to call them cars, fanciful cars. And yes, I realize that I just said that the game was physics based, and that would seem to me to be inconsistent with the idea of stiff inflexible rods made out of flowing water, but I never took that course on fluid dynamics, so what do I know?

Also the game is pretty fun I guess. Maybe you should just try it.