🌳 Terraria World Workshop • Episode 3 of 12 • See All Episodes
⛏️ Episode 3 · Beginner · Make a Change

Build Your Own Terraria World
Episode 3: Your First Change

This is the moment it becomes real. You will open a world in TEdit, change one single tile, save it, and see your change waiting for you in the game.

👶 Ages 10+ ⏱️ ~45 Minutes 🌳 Terraria ✓ Free workshop
🗺️ Open in TEdit 🔍 Find a tile 🖌️ Paint 💾 Save .wld 🚀 Load in game ↩️ Undo safely
⛏️ Start Step 1 ← All Episodes 🖨️ Print Guide
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0 XP
Level 1
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📦
Starter pack: the ready-to-use world plan and README for the series are in terraria-world-starter.zip. Use them alongside this episode.
🐯
Ember says: change just ONE tile this time. A tiny, certain change beats a big, broken one. Once you trust the loop, you can change a hundred tiles.
🛠️
Try it right here: make the same change in the browser first, then do it for real in TEdit. This is the real Terraria World Studio, live in this page. Open it full size →
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🗺️
Open Your Copy in TEdit
Never the original, always the copy
Active
🎯
Goal for this step

Get a world open on screen in TEdit.

  • 1Open TEdit. It starts with an empty view and a menu.
  • 2Choose File then Open and pick your copy, the one you made in Episode 2.
  • 3Wait while it loads. Big worlds take a moment. You will see the whole world, tiny, in the window.
  • 4Zoom in towards the surface. That is the ground you know from the game.
✏️
Fill in the Blanks
+15 XP
Open a world in . Always open the you made first, not the original.
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Knowledge Check
+15 XP
Which world should you open in TEdit?
AThe copy you made
BThe original
CThe backup .bak file
2
🔍
Find a Tile to Change
Zoom in and choose somewhere simple
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🎯
Goal for this step

Pick one plain tile near the surface to change.

  • 1Zoom in until you can see single tiles clearly.
  • 2Find a patch of plain grass or dirt near the surface. That is your target.
  • 3Hover over a tile. TEdit shows you what tile it is and where it is on the map.
  • 4Pick somewhere you will easily spot again in the game, like next to your spawn point.
✏️
Fill in the Blanks
+15 XP
Zoom in until you can see single . Pick one near the point so it is easy to find.
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Knowledge Check
+15 XP
Why pick a tile near your spawn point?
AIt is the only place you can edit
BIt is easy to find again in the game
CIt makes the world smaller
3
🖌️
Paint One Tile
Choose a tile type and place it
Locked
🎯
Goal for this step

Change exactly one tile from one type to another.

  • 1In TEdit, pick a tile to paint from the tile list. A good first choice is stone or wood.
  • 2Make the brush the smallest size, so you change only one square.
  • 3Click your target tile once. It changes.
  • 4Stop there. One tile is the whole goal. Big changes come later.
One tile change
before:   [ grass ]
after:    [ stone ]
(one square, one click, smallest brush)
✏️
Fill in the Blanks
+15 XP
Use the smallest brush and one tile. Change only one square so it is easy to find.
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Knowledge Check
+15 XP
Why use the smallest brush for your first change?
AIt is faster
BSo you change only one tile and can spot it
CBig brushes are broken
4
💾
Save the World
Write your change back to the .wld
Locked
🎯
Goal for this step

Save the world so your change is stored in the file.

  • 1Choose File then Save. TEdit writes your change back into the .wld file.
  • 2Keep the same name so the game can still find it.
  • 3Wait for the save to finish before you close TEdit.
  • 4If TEdit asks about the version, keep the version that matches your game.
✏️
Fill in the Blanks
+15 XP
Use File then to write your change into the . file.
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Knowledge Check
+15 XP
How does your change get into the game?
ASave the world, then load it in the game
BIt changes the game instantly
CEmail it to the game
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🚀
Load It Back in the Game
See your change for real
Locked
🎯
Goal for this step

Open the world and find the tile you changed.

  • 1Close TEdit, then open tModLoader and start the world.
  • 2Walk or travel to the spot you changed. It should be right there.
  • 3If it is not showing, close the game fully and open the world again. Some changes need a fresh load.
  • 4That is the whole loop: edit, save, load, look.
✏️
Fill in the Blanks
+15 XP
After saving in TEdit, the world in the game to see your change. If it is missing, the world.
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Knowledge Check
+15 XP
Your change is not showing. What should you try?
ABuy the game again
BClose and reload the world
CDelete TEdit
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↩️
Undo and Try Again
Build the safe, repeatable loop
Locked
🎯
Goal for this step

Turn one change into a repeatable, fearless habit.

  • 1If you make a mistake, undo in TEdit (Ctrl+Z) or restore your backup copy.
  • 2Nothing here is permanent while you keep a free backup copy.
  • 3Once you trust the loop, change a few tiles. Then a few more.
  • 4You just did the slowest part of world editing. Everything after this is bigger and faster.
✏️
Fill in the Blanks
+15 XP
If you make a mistake, press Ctrl+Z to , or restore your copy.
🧠
Knowledge Check
+15 XP
What makes this loop safe to repeat?
AYou never save
BThe game fixes it for you
CYou can undo or restore a backup
🎉⛏️🌳✨🎉
You Changed a Real World!
You opened a world, painted one tile, saved it and saw it in the game. That loop is the whole skill. Next, the series turns one tile into whole rooms, biomes and arenas.
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Total XP
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🧩
The Edit Loop
+20 XP
Drag the edit loop into the correct order.
Open your backup copy in TEdit
Look at your change in the game
Paint one tile
Save the world