What is the best way to create a procedural generation mesh, as in what language, libraries, etc.?</h1>

Welcome to the forums!

I don't really understand your question. You say you want to create a low-poly mesh that can be navigated by the player. I assume the pictures you showed are pictures of how you want your mesh to look like? Can I assume you want the player to walk on it? As long as you keep the terrain small enough, most computers can easily handle this.

You can easily find things on how to create voxel terrain via Google like this link. It shows you how to create voxel terrain in a "blocky" way. Your pictures show a smooth environment however, but not like marching cubes, so you probably want laplacian smoothing, this smoothing algorithm can be applied to the terrain from the previously linked tutorial, or another generator. You will however need to know how to program this, as there are not tutorials for everything.

This can be programmed in around any language that's not very slow and supports 3D rendering. For beginners, the Unity engine may be your best choice, as there are a lot of good tutorials out there. A language like C++ can also do the job, but I guess even scripting languages could do this. This requires you, however, to have experience in the language and/or tools you are going to use. As you say you are a "newbie" to programming, I recommend doing some basic stuff first. Programming something like this requires physics, 3D rendering and applying some algorithms; I think most beginnners aren't able to complete this project, so I would recommend something like pong first...

Welcome to the forums!

I don't really understand your question. You say you want to create a low-poly mesh that can be navigated by the player. I assume the pictures you showed are pictures of how you want your mesh to look like? Can I assume you want the player to walk on it? As long as you keep the terrain small enough, most computers can easily handle this.

You can easily find things on how to create voxel terrain via Google like this link. It shows you how to create voxel terrain in a "blocky" way. Your pictures show a smooth environment however, but not like marching cubes, so you probably want laplacian smoothing, this smoothing algorithm can be applied to the terrain from the previously linked tutorial, or another generator. You will however need to know how to program this, as there are not tutorials for everything.

This can be programmed in around any language that's not very slow and supports 3D rendering. For beginners, the Unity engine may be your best choice, as there are a lot of good tutorials out there. A language like C++ can also do the job, but I guess even scripting languages could do this. This requires you, however, to have experience in the language and/or tools you are going to use. As you say you are a "newbie" to programming, I recommend doing some basic stuff first. Programming something like this requires physics, 3D rendering and applying some algorithms; I think most beginnners aren't able to complete this project, so I would recommend something like pong first...

I have used unity before, but never for something like this, sorry my article wasn't clear, by the way. Anyway, thanks for your help :D.