Developer Debug

Enter password to open chamber jump tools.

Wrong password. Try again.

Cheat Solve

Teacher shortcut. Enter password to solve the current algorithm question quickly.

Wrong password. Try again.

Developer Jump Panel

Password accepted. Choose a chamber for testing. The question type is shown under each chamber; questions are randomised within that type.
Uncle Joe and the Key of Product cover picture

Rescue the villagers, solve the multiplication challenges, and unlock the final door with the Key of Product.

How to Play

  1. Move and look around. Desktop: use WASD to walk, arrow keys or drag to look, and E to inspect. Mobile: use the left pad to move, the right pad to look, then tap the prompt.
  2. Find the next glowing object. Go near the tablet, torch button, scarab pad, bridge step, villager, or sun seal. The game will tell you what to inspect next.
  3. Solve the Ancient Multiplication Lock. Fill in the algorithm from ones to tens to hundreds. Use the place value mat on the left to understand grouping and regrouping.
  4. Progress gradually: C1 basic facts → C2 2-digit no regrouping → C3 simple regrouping → C4 harder regrouping → C5 3-digit mixed regrouping → C6 3-digit questions with 4-digit products.
  5. Every run has variety. Questions are randomised within the correct chamber type, so pupils practise the same skill but do not always see the same numbers.
  6. Complete each chamber. Solve all 6 challenges, collect the jewel or key, then move forward to rescue the villagers and escape.
Restart Game
Use this only if you want to restart from Chamber 1 and generate a fresh run of questions.
🏺 Uncle Joe and the Key of Product
Room: Entrance
Jewels: 0 / 5
Stage: 1 / 6
Quiz: 1 / 6
Jewels
♦️ 🔶 💚 🔷 🗝️
No jewel yet
E Inspect

Ancient Multiplication Lock

Complete the algorithm. Hints are hidden unless you press Hint.

7 × 8 =?
Stage 1: Times Table Gate Question 1 of 3

Place Value Chart

Use this mat to see the groups and regrouping. You may hide it on smaller screens.

Algorithm Lock

Tap the glowing box, then use the number keyboard. If regrouping is needed, fill the small carry box too.
Tap box → number. Use the in-game keyboard so iOS and Android screens stay stable.
Progression: 1d × 1d → 2d × 1d no regrouping → 3d × 1d no regrouping → 2d × 1d regrouping → 3d × 1d regrouping.
♦️ 🔶 💚 🗝️

The Escape Is Complete!

You collected the Ruby of Product, Topaz of Tens, Emerald of Hundreds, the Wondrous Magic Wand of Regrouping, and the Key of Product.

You unlocked the final door, and the happy villagers walked out into the bright forest.

Designed by Lim Kim Sze © 2026