29. The Terrain Editor
1⃣ What this lesson is about
He says this lesson is about Terrain in Roblox.
Terrain is used as the ground of your map.
2⃣ Why there is no baseplate
There is no baseplate because:
Terrain will be the ground instead
He likes terrain because:
It’s fast to make
It looks more realistic than a flat part with grass
3⃣ Opening the Terrain Editor
To use terrain:
Go to Home
Click Terrain
This opens the Terrain Editor.
4⃣ Terrain Editor sections
There are two main tabs:
Create
Edit
He starts with Create.
5⃣ Creating terrain (basic setup)
Create lets you generate terrain automatically.
You set:
Position → center (0,0,0)
Size → how big the map is
Bigger numbers = bigger terrain.
6⃣ Biomes (types of land)
Biomes decide what the land looks like.
Examples:
Arctic → snow
Water → oceans
Mountains → hills and peaks
Plains → flat land
Lava → lava areas
You can pick multiple biomes.
7⃣ Blending
Blending controls how smoothly biomes mix.
0 → hard edges (looks bad)
1 → smooth fading (looks good)
He keeps this high.
8⃣ Caves
Caves decide if underground holes appear.
He doesn’t focus much on this.
9⃣ Biome size
Biome size = how big each biome area is.
He leaves it default.
🔟 Seed (important idea)
Seed is a random number that controls how terrain is generated.
Same seed = same terrain.
He compares it to Minecraft seeds.
You usually:
Leave it alone
Or copy one you like from someone else
1⃣1⃣ Generating terrain
He clicks Generate.
It takes a few seconds.
Terrain appears with:
Water
Snow
Mountains
1⃣2⃣ Height problem (Y size)
Mountains look small because:
Y size (height) was low
So he:
Clears terrain
Regenerates with higher Y size
Same seed → different height → very different result.
1⃣3⃣ Testing terrain
He presses Play / Test Here.
Test Here means:
You spawn where the camera is
He notices:
Terrain is very steep
Might be too extreme for a real game
1⃣4⃣ Editing terrain
After creating terrain, you can fix problems.
He switches to Edit.
1⃣5⃣ Select + Transform
These work together.
Select → choose terrain
Transform → move, rotate, scale it
Used for precise changes.
1⃣6⃣ Fill & Replace
Fill:
Replace selected area with a material
Replace:
Change one material into another
Example:
Replace grass with rock
1⃣7⃣ Sea Level
Sea Level changes how high water is everywhere.
He raises it so oceans look better.
Water might leak on edges, but that’s fine.
1⃣8⃣ Draw tool
Draw lets you add or remove terrain using brushes.
Options:
Add or subtract
Brush shape (circle, square)
Brush size
Used for quick edits.
1⃣9⃣ Plane Lock
Plane lock keeps terrain:
Flat
Smooth
Even
Auto = Roblox decides
Manual = you decide the direction
2⃣0⃣ Sculpt tool
Sculpt:
Grows or shrinks terrain
Doesn’t add new chunks
Uses:
Strength
Brush size
Good for shaping hills.
2⃣1⃣ Smooth tool
Smooth removes sharp edges.
Makes terrain less jagged
Keeps same shape, just smoother
Lower strength = gentler smoothing.
2⃣2⃣ Paint tool
Paint changes the terrain material.
Example:
Change rock to snow
Used to fix weird-looking areas.
2⃣3⃣ Flatten tool
Flatten creates flat land.
Used for:
Building areas
Bases
Towns
It:
Adds terrain where needed
Removes terrain where needed
Ends with flat ground
✅ LEFT FLATTEN
👉 Adds terrain only
(raises low areas up)
✅ MIDDLE FLATTEN
👉 Adds AND removes terrain
(most balanced, makes it truly flat)
✅ RIGHT FLATTEN
👉 Removes terrain only
(cuts high areas down)
2⃣4⃣ How he uses terrain (his workflow)
His usual process:
Generate terrain
Edit problem areas
Flatten spots for building
Smooth and paint as needed
2⃣5⃣ Final thoughts
He really likes terrain because:
It looks realistic
It’s a great base for a game
You can remake it as many times as you want
He encourages experimenting.
🧠 One-line summary
👉 Terrain lets you quickly create realistic land, then edit, smooth, paint, and flatten it to build your game on.
If you want next, I can:
Turn this into study notes
Make quiz questions
Explain each tool in one sentence
Do baby-level summaries only