Ores in this world: Copper, Iron, Tungsten, Gold, Demonite (Corrupt/evil world), Meteorite, Obsidian, Hellstone, Cobalt, Orichalchum, Titanium, Chlorophyte.

NPC names:

Guide - Marty

"This is Terraria." The person standing next to me said.

"What's Terraria?" I said.

"It's a new world. You're stuck in it."

"WHAT!?" I screamed in rage. Everything went black.

Chapter 1: The Beginning of the Beginning.

A minute later, the person who was standing next to me suddenly appeared in front of me and walked away. "Come back! What is this? Why am I here?" I desperately screamed, noticing - with surprise - that a sword was in my hand. 

"Let's get started. My name is Marty. What's yours?"

"Jet." I mumbled, trying to get his attention.

"Hmmm. Don't think I've had anyone with this name before. You're unique. What you have to do: Reach into your pocket, find a pickaxe-"

"A pickaxe?"

"Yes, idiot. A pickaxe. Make sure not to cut yourself on it." Marty said.

"Okay. Now?"

"Mine stone. Quickly. If I die, then-"

"Fine." Of course, I mine stone, as well as a shiny block. What could it be?

"Take out your axe, Jet." Marty instructed.

"I have an axe as well? Oh well. I'll just start chopping down this tree."

Chapter 2: The House.

"Good work. Now shape it into a crafting table and place it down. Quickly, before night. Shape 15 stone into 60 walls, craft a door, a table and a chair. Place the leftover stone and wood down in a house-like shape, leaving three blocks for the door. Place the door in it, the furniture inside and finish the house with the walls."

"Bleah."

did all that and suddenly a voice sounded in my head:

"Marty the Guide has arrived!"

"So you're a Guide, aren't you?" I asked him.

"Well done, Jet. Now, if I die, I'll respawn. What's that lump of metal that you have in your hand?" Marty asked.

Chapter 3: A Slimy Presence.

"Copper, I think."

"Let me see. Copper. Get two more-great. Get your sword out and rid the world of this!" Marty exclaimed, pointing at a lump of slime. Of course, I stabbed it until it faded away, leaving the world forever. I shuddered. Would the same thing happen to me? Of course, I got the copper, noticing that I somehow had gel in my pocket.

"Good. With your wood and gel, craft torches. Craft them, more wood and more stone into a furnace and place it down, then smelt your copper ore into copper bars. That's all for today."

Chapter 4: The Meaning of this World

"Why do I have to?"

"Crafting armour (soon), idiot. Then mine some iron. It has quite a distinctive look." I jump down my little hole and start mining it: Marty was right. It did have quite a funny look about it. 

"Hurry up! Night's coming! You will then have to defend me from evil. If I die-"

"Yeah, I know. Is there a point to this world? Is there a certain barrier when I can do what I want?"

"First, there is a point to this world: to survive. You die, like the slime dies. Allow me to recite a (modified) quote: 'Don't trust blocks, they make up everything.'. And as for your second question, Jet," Marty said with a mock bow, "the point where you could do anything that you wanted was when you first joined this world."

"WHAT!?"

"Strange, huh. Still, live with it - or live without it. It's your choice."

"My choice."

Chapter 5: Caving

As night fell, I was carving through stone and Marty was instructing me: "Don't mine that block. No, that one. Wait - it's night so the zombies are coming. Get into the house!"

Too late. I fell through the hole, only stopped by a mass of cobwebs suspended over some more ore - tungsten, I think.

"Don't move. It could be worse."

"How?"

I spoke to soon. The cobwebs gave away and made me rapidly plummet towards the floor of ore.