LIVE MULTIPLAYER · GRADES 3–5
Zum-Zum ✦
Solve number cages (Calcudoku/Mathdoku style), spot patterns, and compete in live rounds. One player hosts and shares a PIN. Everyone else can join without signing in.
ZUMI GAMES ✦ PLAY, THINK, GROW
Big fun. Bright thinking.
Games, puzzles, and playful adventures for curious minds. Compete with friends, discover surprises, and explore something new.
Explore games
NEW · GRADE 6 · 5 MATH WORLDS
RuleShift
Change the rules of a miniature world with ratios, number lines, equations, shapes, and data. Play a solo adventure, take the daily challenge, or race friends!
NEW · DAILY MATH PUZZLE · GRADE 6
ShapeShift ✦
Transform your number as you cross a grid of math operations. Find the target, discover shortcuts, and beat your best path in a daily challenge or 50 practice puzzles.
NEW · 2-PLAYER STRATEGY · JUST FOR FUN
CrossPaths ✦
Race through a shifting maze with a friend. Every move changes the maze for both players, so your route can become their obstacle.
Pick a puzzle. Spark an idea.
17 more ways to play with numbers, patterns, and logic — plus Zum-Zum's classic arithmetic cages above. Solo games are free to try, with no login or leaderboard needed.
Grades 3–8
NUMBER CROSSWORD
Zumi Kakuro
Fill every number run to match the sums, without repeats.
Play puzzle → Grades 3–8 CAGE CHALLENGESum Sudoku
Solve the mini Sudoku and balance the sum cages.
Play puzzle → Grades 2–8 INEQUALITY GRIDZumi Greater
Place numbers between Zumi's greater-than and less-than clues.
Play puzzle → Grades 3–8 CITY LOGICZumi Skyline
Build a skyline that matches every viewing clue.
Play puzzle → Grades 3–8 HIDDEN PATTERNMystery Matrix
Crack an unusual number grid using Zumi's secret sum clues.
Play puzzle → Grades 2–8 TINY SUM GRIDZumi Suko
Use the numbers 1–9 to satisfy overlapping sums.
Play puzzle → Grades 2–8 KEEP OR CLEARSum Safari
Keep just the right tiles to reach each row and column target.
Play puzzle → Grades 3–8 EQUATION CROSSWORDCrossMath Quest
Complete the intersecting number equations.
Play puzzle → Grades 3–8 NUMBER RELATIONSHIPSDot Detectives
Follow white and black dots to uncover the grid.
Play puzzle → Grades 2–8 RECTANGLE PUZZLEShape Slices
Split the board into perfect rectangles with the right areas.
Play puzzle → Grades 2–8 DIAGONAL NUMBER PATHNumber Trail
Connect every number, including diagonal steps.
Play puzzle → Grades 2–8 STRAIGHT NUMBER PATHNumber Bridge
Make a continuous number path without diagonal moves.
Play puzzle → Grades 2–8 MAGIC SQUAREMagic Sum Garden
Give every row, column, and diagonal the same magical sum.
Play puzzle → Grades 4–8 HIDDEN EQUATIONEquation Explorer
Find the hidden eight-character equation in six guesses.
Play puzzle → Grades 3–8 TARGET EQUATIONTarget Tangle
Crack a hidden equation when you already know the result.
Play puzzle → Grades 3–8 FOUR-NUMBER CHALLENGEZumi 24 Lab
Use each number exactly once to make 24.
Play puzzle → Grades 2–8 SLIDING STRATEGYZumi 2048
Slide and merge matching tiles to reach 2048.
Play puzzle →Solo games save stars in this browser only. Hosting live Zum-Zum games requires Google sign-in; joining with a PIN does not.