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3D AI Game Maker for Browser-First Prototypes

Test the movement and camera before the world gets bigger. Sketch a 3D game around one mechanic, a clear goal, and a small scene. Play the browser build, spot what feels off, and refine the loop before adding more content.

Get started with
  • Free starter credits
  • No coding required
  • Review cost before generating
  • Runs in your browser

Partners and teams

Google
Stanford University
itch.io
Tencent
Harvard University
AWS
POKI
TikTok
UC Berkeley
Microsoft
Demon Slayer
Baidu
Columbia University
NVIDIA
ANIPLEX
The University of Hong Kong
Trustpilot

How it works

Build an arcade time trial

Turn a coastal circuit into a playable race against the clock.

  1. Step 1
    A notebook sketch of a coastal circuit with a hairpin, a start line, and a small race car

    Sketch a lap worth racing

    Picture a coastal track with a long straight, a tight hairpin, and a finish line where players can see their lap time.

  2. Step 2
    A workspace concept showing the coastal circuit, car, checkpoints, and timing rules

    Build the circuit in SEELE

    Ask seeleAgent to lay out the track and set up the car controls. Add checkpoints that players must pass in order for a lap to count.

  3. Step 3
    A third-person race car approaching a coastal checkpoint with a lap counter, timer, minimap, and speedometer

    Set your first lap time

    Drive through the checkpoints and cross the finish line. Check your time, then go for a faster lap.

Pick a starting point

Choose what your prototype should prove

Make an RPG with AI

Build a 3D RPG adventure with Three.js — a village to explore, characters to talk to, and quests to follow.

Prompt

Build a 3D fantasy village RPG with Three.js: a hero who can explore, talk to villagers around a campfire, take quests, and fight enemies outside the walls.

  • 3D world, characters, and dialogue
  • Quest and combat logic generated
  • Plays in the browser
Play the example ↗
Fantasy village RPG gameplay with characters around a campfireMake a Warcraft RPG ↗

Why SEELE

What a small 3D playtest can tell you

Play the loop while it is still small

A short browser build lets you try the core action before you plan a full level. Watch for pauses, unclear goals, and inputs that do not produce an obvious response.

Judge scale from the player camera

Check whether doors, ledges, and landmarks feel readable from the actual view. Adjust the scene after moving through it, not only from a top-down layout.

Teach one rule before adding another

Introduce a mechanic in a safe space, then reuse it with a new obstacle. This makes it easier to tell whether difficulty comes from the design or an unclear control.

Keep the prototype focused on one question

Decide what the build needs to prove: a jump, a camera, a combat beat, or a route through the level. Leave unrelated systems out of that test.

Use playtest notes that describe what happened

Record where a player hesitated, missed a cue, or tried an unexpected action. Those observations point to a specific change in layout, feedback, or controls.

Change one mechanic at a time

After a test, adjust a single variable such as camera distance or jump height, then replay the same route. You will see whether that change solved the problem.

Made with SEELE

Playable examples

These games are playable. Pick one and give it a try.

Who it’s for

Who might use a 3D prototype

3D environment reference for an indie game prototype

Indie game developers

Test a movement mechanic or compact level before committing to a larger 3D build. Keep the prototype tied to one question you can answer by playing it.

Browser 3D Game Maker ↗
3D game asset reference for a small team playtest

Small game teams

Share a playable scene to discuss camera, scale, and mechanic feel. Use the same short route when comparing revisions so feedback stays specific.

3D asset to HTML5 game ↗
3D game scene reference for exploring a mechanic

Designers exploring a 3D idea

Turn a rough mechanic into a scene with controls, an obstacle, and a visible goal. A small test can clarify what needs a designer’s next pass.

3D Game Creator Online ↗

Compare

A playable test or a full game plan

FeatureSmall playable prototypeOpen-ended game plan
First questionCan the player understand and enjoy this mechanic?What should the full game include?
Scene sizeOne room or short route built around the testA whole world planned before the loop is checked
Player feedbackMovement, camera, and response can be tried in contextControls are described before they are playable
IterationReplay the same route after one focused changeSeveral systems change before the cause is clear
Next decisionUse the playtest to choose what to build nextChoose scope from the idea alone

Reviews

Creator videos

FAQ

3D AI game maker questions

What is a 3D AI game maker?

A 3D AI game maker turns a written game idea into a scene or prototype you can inspect. For this page, the useful test is whether the player can move through a small 3D space and understand its main goal.

What can I make with a 3D AI game maker?

Try a compact exploration scene, obstacle course, arena, or control test. Pick one mechanic and keep the level small enough to evaluate it by playing.

What must a 3D game prompt define before the first playtest?

Describe the player, camera, controls, goal, and one obstacle. State what success and failure look like, then leave out features that do not help test that loop.

Can I start with a rough 3D game idea?

Yes. Turn the idea into one player action and one visible outcome. For example, replace “make an adventure game” with a short route to a landmark and one obstacle on the way.

How do I choose a camera for a 3D game?

Choose the view that helps the player read the test. A close third-person camera can show character movement; a first-person view can make aiming or navigation the focus. Check distance and visibility while moving.

How can I test 3D movement?

Use a small room with fixed landmarks, a wall, and one low obstacle. Repeat the same movement and note where the character stops, overshoots, or becomes hard to see.

What makes a 3D game level easy to read?

Give the player a visible goal, separate walkable surfaces from hazards, and use landmarks to show direction. Test from the camera angle the player actually uses.

How should I scope a 3D game prototype?

Limit the build to one mechanic, one short route, and the controls needed to try it. Add another system only after the current loop is understandable.

What is a player loop?

A player loop is the repeated action and response at the center of play: the player does something, the game reacts, and the player decides what to do next. A prototype can test whether that sequence feels clear.

Should a prototype include a full game world?

Usually not for an early mechanic test. A single room or short path gives enough context to judge movement and camera without adding scenery that does not affect the question.

What should I do when a control feels wrong?

Repeat the same action and identify the mismatch: input delay, movement speed, camera response, or unclear feedback. Change one setting or cue, then run the same test again.

Is a generated 3D prototype ready for production?

Treat it as a testable draft. Check code and assets, performance, accessibility, device support, and licensing before using any prototype in a release build.

How can I make a playable 3D game without coding?

Start with one room or a short outdoor route. Describe the camera, movement, goal, checkpoint, and restart in plain language. Play the 3D RPG example above to see a browser game in action, or try the rooftop prompt and test whether you can finish the route after falling once.

How can I make a 3D challenge fair?

Show the obstacle before the player reaches it, use consistent controls, and give a clear signal when an action succeeds or fails. Ask someone new to try the route without explaining it first.

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