A timber shelter cutaway based on a dimensioned 3D model, with seated rafters, low roof ties, floor joists on continuous foundations, and an exterior downpipe draining away

Commander Academy

Engineering missions · Ages 10–14

Build what
lasts.

Explore in 3D. Test your ideas. Build a shelter you understand, from the ground up.

First 5 lessons free. No sign-up needed.

BUILDING WHAT PROTECTS.

Teaching what lasts.

Illustrated shelter concept
Scroll to explore

30connected missions

5campaigns to explore

Interactive 3D learning

Your pace. Your discoveries.

The training grounds · Frame Corps

What makes a wall
stay up?

A rectangle can lean. A triangle holds its shape. Sometimes one small change makes all the difference.

Give this frame a push. Then add a diagonal and see what changes.

Explore the full 3D lesson
FIELD EXERCISE 01Frame & force
An open wall frame pushed sidewaysThe unbraced frame leans to the right. Add a diagonal to make two rigid triangles.PUSHGROUND

The frame changes shape.

An ideal pin-jointed model. Movement is exaggerated to show the idea.

01

Explore it.

Get close to a 3D model. Find out what every part does.

02

Put it to the test.

Change a load or a dimension. See the numbers respond.

03

Make it your own.

Solve the challenge, explain your thinking, and build on it.

For curious kids. And their grown-ups.

More “I wonder.”
More “I made that.”

Make room for the questions, experiments, and small discoveries that turn into real understanding.

  • A simple, private start

    No child account. Learning progress stays on this device.

  • Room to find their own pace

    Pause, revisit an idea, and try again. There’s no race to finish.

  • Better with a grown-up nearby

    You guide the learning and supervise activities away from the screen.

Read the grown-up’s guide
YOUR FIRST CHAPTER

5 free missions.

A wall. A doorway. A corner.
The beginning of something bigger.

Let’s build something

No sign-up. No card. Just curiosity.

READY FOR ALL 30?

$79 onceor$29 / year

One household · All 30 missionsPaid checkout coming soon · View plans

Good questions

Before you
begin.

A few things you might be wondering.

What devices does it run on?

A modern browser with WebGL. Nothing to install. If 3D acceleration is missing, the lesson, numbers lab, assessments, diagrams, and Field Card stay available as text.

Does it work offline?

Once the Academy file has loaded, fonts and the engine are embedded in that file, so the lesson keeps running with the network off. Progress is stored only in that browser.

What ages is it for?

Every lesson is marked Ages 10–14. The learner is the child. The account, if you create one, belongs to the adult.

What does an adult do?

Own the account and any purchase, open the Adult Guide from the lesson menu, supervise Serve missions (they begin “With a qualified adult”), and print Field Cards if you want a paper record. See the mission brief for the full list.

Does my child need an account?

No. Lessons 01–05 need no sign-in. Children never sign in. Progress and Honor stay in the browser on the device where the lesson is played.

What do you store?

If you create an adult account: your email and password with Supabase, your entitlement, and a Stripe customer id if you pay. Nothing about the child. Academy progress is not uploaded.

Can two children share it?

Yes. One household plan. Progress is per browser, so two children on two devices each keep their own Honor.

How do refunds work?

Support and refund handling is being set up before checkout opens.