Logic in motion

Online games

Interactive activities where you can observe, make a move, and put a strategy to the test. Start right away—no account required.

Installed static game

3×3 Rubik’s Cube

Scramble and solve the cube visually with two step-by-step guided solution modes and animated moves.

Verified package In your browser
Open game
Installed static game

The Matchstick Game

Choose how many matchsticks to take and claim the last one: challenge the computer or play with a friend on the same device.

Verified package In your browser
Open game
Installed static game

Say 100 to win

Reach the exact target before the computer or a friend. Both the target and maximum increment are configurable.

Verified package In your browser
Open game
Installed static game

Connect Four

Challenge the computer or a friend and connect four discs. Three difficulty levels and same-device play.

Verified package In your browser
Open game
Interface in 4 languages

Frogs on leaves

A swapping puzzle: move the frogs to the opposite side using valid steps and jumps.

1 player Adjustable difficulty
Play now
Interface in 4 languages

Four fours clock

Build the clock numbers using exactly four 4s and the available operations.

Arithmetic Real time
Explore the clock
Interface in 4 languages

Find the symbol

Compare the cards and be first to find their matching symbol, solo or in a room.

1–2 players 1 optional spectator
Play solo or join a room
Interface in 4 languages

Josephus circle

Explore the Josephus problem and follow the elimination order step by step.

Algorithms Step by step
Start the simulation