CardForge

A card-game academy and magic workshop. Learn how a deck really works — build runs and sets, add cards to ten, and discover that every "magic" card trick is secretly just math.

Level 1

For grown-ups — progress report →A private, on-device snapshot mapped to the skill areas practiced. Export a CSV or print — nothing leaves this device.

Play the game

Two hands-on surfaces — the same skills as the app, rebuilt for the browser.

Card Table You're dealt a hand — tap cards to build a run, make a matching set, add two to ten, or find the highest and lowest. The number sense behind every card game. Magic Workshop · predict-first Predict how a card trick ends BEFORE the reveal — then find out why it was never magic at all. It's forced by arithmetic.

Practice the concepts

16 kits from the basics of the deck up to strategy, probability, and combinatorics — a short round of questions with a hint whenever you get stuck. Your progress stays on this device.

Looking for deeper probability play? Try ChanceForge for interactive sample spaces and probability trees.

Kit 1: Card Game Basics Card Games & Strategy · grades 4–5 · 25 questions Kit 2: Probability and Card Math Probability & Counting · grades 4–5 · 25 questions Kit 3: Strategy and Game Theory Card Games & Strategy · grades 5–6 · 25 questions Kit 4: Magic Tricks and Mathematics Card Magic · grades 5–6 · 25 questions Kit 5: Advanced Card Games Card Games & Strategy · grades 5–6 · 25 questions Kit 6: Card Trick Performance Card Magic · grades 6–7 · 25 questions Kit 7: Advanced Probability Probability & Counting · grades 6–7 · 25 questions Kit 8: Game Design and Creation Game Design · grades 7–8 · 25 questions Kit 9: Advanced Probability & Combinatorics Probability & Counting · grades 6-8 · 25 questions Kit 10: Game Theory & Decision Making Card Games & Strategy · grades 6-8 · 25 questions Kit 11: Card Game Design & Mechanics Game Design · grades 6-8 · 25 questions Kit 12: History & Culture of Card Games Connections & Real World · grades 6-8 · 25 questions Kit 13: Cross-Topic Connections Connections & Real World · grades 5-6 · 25 questions Kit 14: Real-World Applications Connections & Real World · grades 6-7 · 25 questions Kit 15: Misconceptions & Reasoning Connections & Real World · grades 6-7 · 25 questions Kit 16: Advanced Synthesis Connections & Real World · grades 7-8 · 25 questions

Play together · new on the web

Card Duel — a head-to-head kit round for 2–4 players. Take turns on one device, or join a friend in an online room by code. Highest first-try score wins; no chat, no accounts.

⚔️ Start a Card Duel →

More ways to practice

All also on the tab bar above — kept here as quick links:

🔀 Mixed practice — revisit what you’ve learned A short round that shuffles questions from the kits you’ve played, brought back when they’re ready to review. Great for making it stick.

CardForge mascot

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 CardForge

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

Browse all books →

Kids also liked

PlayDealTalesAppCardForgeStoryTrick · EffectsForgeBookCardForge — storybookStoryCounter · CardForgePlayDepthQuest

Privacy & how it works