To speak objectively, your idea is not feasible within the current extent of Terraria's capabilities.
All games are constructed within an environment known as an engine. The engine dictates what is possible and capable of being done within the game made in the engine. Engines are typically constructed with a framework that allows for additions in capability without sacrificing much optimization. Go beyond the limits of the framework the engine's built upon, and performance will take a massive hit due to poor optimization of the code.
My main point is that, due to the way Terraria's engine was constructed, with the framework developed to suit the current 2D game, it would likely be much easier and faster to write a brand new engine and game from scratch than it would be to try to modify Terraria and its engine in its current state to add a 3D world without skewering the game's ability to run with any kind of good performance.
Also, there are better places to post your idea. Due to the irrelevance of your suggestion to the topic of this thread, it will likely not be taken seriously by those to read it (considering it's not the content they're looking for). May I suggest the
Player Suggestions section?
And if you already knew everything I just told you in advance, then for future reference, please act like it. Thank you.
on someone who has bigger dreams than your god. Anyways. The 3d capability in the wii u and 3ds is why I even came up with the idea. And hey. This would make the game ten times better than your paper mario reference.
