GridForge

Four ideas. Five games. One grid. Rowan builds the connection, Twain makes the fork, Flank flips the territory, and Oddwin controls the parity — and Gridley shows you how the same idea keeps winning across all five games.

Level 1

Play a game

Five real games vs a computer opponent, plus a puzzle that names the shared idea across all of them.

Connect-4 Drop discs; get four in a row vs a graded AI. Connect + fork. Gomoku (Five-in-a-Row) Connection at scale on a 9×9 board — open threes and forks. Reversi / Othello Flank a line to flip it to your colour. Corners and territory. Dots & Boxes Claim boxes and control parity — the double-cross decides it. Hex Link your two edges with an unbreakable chain — no draws. Spot the Shared Primitive Four ideas, five games: name the primitive at work in each position.

Choose a kit

Each kit is a short round of questions with hints when you need them. Your progress stays on this device.

Kit 1: Connect-4 Basics Connection · grades 4-5 · 25 questions Kit 2: The Fork Double-Threats · grades 4-5 · 25 questions Kit 3: Blocking & Threats Double-Threats · grades 4-5 · 25 questions Kit 4: Solved Games Connection · grades 5-6 · 25 questions Kit 5: Gomoku Connection · grades 5-6 · 25 questions Kit 6: Open Threes & Fours Double-Threats · grades 5-6 · 25 questions Kit 7: Hex — Connection Paths Connection · grades 6-7 · 25 questions Kit 8: Hex Strategy Connection · grades 6-7 · 25 questions Kit 9: Reversi Basics Territory / Flip · grades 6-7 · 25 questions Kit 10: Corners & Stability Territory / Flip · grades 6-7 · 25 questions Kit 11: Mobility & Territory Territory / Flip · grades 7-8 · 25 questions Kit 12: Dots-&-Boxes Basics Parity · grades 6-7 · 25 questions Kit 13: Parity & The Chain Rule Parity · grades 7-8 · 25 questions Kit 14: The Double-Cross Parity · grades 7-8 · 25 questions Kit 15: Spot the Shared Primitive Transfer · grades 7-8 · 25 questions Kit 16: Capstone — Grid Games Synthesis Transfer · grades 7-8 · 25 questions

More practice

Extra ways to keep the ideas sharp:

GridForge SprintA calm, self-paced speed round on what you’ve mastered. Mixed practiceRevisit questions across the kits you’ve played. Grid Quest mapA progression trail through every kit.

Play together

Two same-device ways to play a friend. On-device only; nothing leaves this device.

Board Pass & Play — two players, real board Play the actual games against a friend on one device: Connect-4, Gomoku, Reversi, Dots & Boxes, or Hex. No computer — just you two, taking turns. Grid Duel (quiz pass-and-play) 2–4 players take turns on one device — same questions for everyone, highest first-try score wins.

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

📚 Books for GridForge

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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