CryEngine Terrain and Environment Creation
Build one small outdoor space in CryEngine, from flat ground to a lit hillside you can walk through, in a single focused session.
Big open worlds are where solo projects go to stall. A small outdoor space is different. You can finish it, play it, and learn every system it touches.
This guide walks you through one patch of land: a shaped terrain, one painted ground material, one type of vegetation, a fixed time of day, and a walk-through in game mode. Nothing more.
Before you start, check CryEngine’s current license page so you know the terms for your project. The steps below follow the CryEngine 5 documentation. Editor layouts and menu names move between releases, so keep the manual for your exact version open while you work.
Set a size and a goal
Decide what the player does in this space before you touch the terrain. Keep it to one sentence. “Walk from a stream up to a lookout rock” is enough.
That sentence gives you a start point, an end point, and a reason to shape the land. It also tells you what to cut. If a hill does not help the walk, it does not belong.
Keep the playable area small. You want to cross it in under a minute of walking. You can always extend the level later. Shrinking an overgrown one is harder.
Sketch it on paper first. Mark the start, the goal, one obstacle, and where you want the player to look. Four marks are plenty.
Create the level and block it out
Create a new level in the Sandbox editor. The new-level dialog asks for terrain settings. Accept the defaults unless the current docs for your version recommend otherwise for a small map.
Now block out. CryEngine’s documentation describes the Designer Tool for quick whitebox geometry. Use it to place rough boxes for the lookout rock, a wall, or a ruin. Gray boxes are fine. You are testing distance and sight lines, not looks.
Drop in a spawn point for the player near your start mark. Then enter game mode and walk the route. In many builds Ctrl+G toggles game mode, but confirm the shortcut in your version’s docs.
Walk it three times. Note where the path feels too long, too short, or confusing. Move the boxes. Walk again.
Shape the terrain
Open the Terrain Editor. Its Sculpt mode handles height changes: raising, lowering, flattening, smoothing, and cutting holes.
If your ground is flat, the docs describe an option to generate terrain with default settings. That can give you rough hills to carve into. For a small space, you may prefer to sculpt by hand.
Work from large to small:
- Raise the main landform first. Build the slope that leads to your lookout. Use a wide brush and low strength so the hill reads as one shape.
- Lower a channel for the stream. Keep it shallow. A deep cut will hide the player from the camera and make the edges harder to texture.
- Flatten the paths. Players read flat strips as routes. A gentle flat band up the hill guides them without signs.
- Smooth the transitions. Hard ridges catch light badly and snag the player. A pass of smoothing over every edge you sculpted fixes most of it.
Walk the route again after each pass. Terrain that looks right from the editor camera often feels wrong at eye height.
Use holes only where a mesh will cover the gap, such as a cave mouth. The docs describe holes as cut-outs, not dips, so the player can fall through an uncovered one.
Paint one ground material
Switch the Terrain Editor to Paint mode. The default terrain shows a checkerboard until you assign real materials.
Start with one base layer, such as grass or packed dirt, across the whole area. Then add one second layer for the path or the stream bank. Two layers are enough for a first level.
Paint the second layer where feet and water would wear the ground down. Edges of paths, the inside of the stream bend, the base of the rock. That placement does more for realism than a third material would.
If you are unsure how materials are assigned to layers in your build, follow the Terrain Editor page in the current docs. The process has changed across versions.
Add one vegetation type
Open the Vegetation Editor. It lets you add vegetation objects and paint them onto the terrain with a brush. Objects added this way can respond to the engine’s wind and related systems, which static props placed by hand do not.
Pick one type. Grass clumps are the safest choice for a first pass. They cover the ground, hide seams between terrain layers, and sell motion when the wind is on.
Paint in clusters, not an even carpet. Real grass grows thicker in low, wet spots and thinner on paths and rock. Leave your walking route mostly clear so the player can read it.
The docs also describe an option that ties vegetation to specific terrain layers, so painting a layer places vegetation automatically. That saves time on larger maps. For a tiny area, painting by hand gives you more control.
Check the vegetation in game mode. Look for clumps floating above slopes or buried in them. Adjust placement until the grass sits on the ground at every angle you can reach.
Set the time of day
Open the Environment Editor. It controls sun position, fog, clouds, and other environment values across a 24-hour range.
You do not need a day-night cycle. The CryEngine environment tutorial notes that dynamic time of day adds complexity, partly because reflections rely on pre-generated cube maps. For a first level, pick one fixed time and stay there.
Drag the time-of-day marker until the light suits your goal. Low sun works well for a lookout walk. It throws long shadows across the hill and makes the terrain shape easy to read.
Then tune a few values:
- Sun angle. Point the light so the climb faces partly into it. The player sees the goal lit from the side.
- Fog. A light haze separates near hills from far ones and hides where your playable area ends.
- Sky and ambient color. Keep them close to the sun’s warmth. Mismatched colors make the scene look pasted together.
Remember that changing a variable sets a keyframe at the current time. If you return to the editor later and the scene looks different, check that the time marker is still where you left it.
Walk it through and fix one thing at a time
Enter game mode and walk from start to goal. Do not edit during this pass. Just watch.
Write down three notes:
- Where you looked around for the path.
- Where the ground felt wrong underfoot.
- Where the light or fog hid something you wanted the player to see.
Pick one note and fix it. Walk again. Then the next note.
Once the walk feels good, turn to the edges. Raise the terrain near the boundary into soft hills or dense grass so the world seems to keep going. The player should never see where your work stops.
Save, back up, and stop
Save the level and copy the project folder somewhere safe. Version control is better if you already use it.
Then stop. One finished outdoor space teaches you more than a half-built continent. Your next level can add a second vegetation type, a water surface, or a moving sun. Add them one at a time, and check the current CryEngine docs as you go, since tool layouts keep changing.
