Puzzle Machine

Puzzle Machine is a collection of four logic games, with thousands of predefined puzzles and 10 difficulty levels in each. You can play without a time limit and continue solving puzzles at your preferred difficulty. Solve three randomly selected puzzles in a row to unlock the next difficulty level.

Logic games

In Who does what?, you match six people to facts such as what they eat or what hobbies they have. Each of the six possible answers belongs to exactly one person, so if Ben rides a motorcycle, none of the other five does. You can click statements to highlight or hide them.

In Grid of Things, you place items from different categories and colors on a grid. The rows and columns indicate how many items of a given color, category or name they contain. This is not Sudoku: identical objects can appear more than once in a row or column.

Statements and deductions

In Knight, Pirate and Spy, each person is a knight who always tells the truth, a pirate who always lies, or a spy who can choose whether to tell the truth. Each makes a statement about themselves or someone else, and you work out who belongs to each group. There can be no more than one spy, but there can be several knights and pirates.

In Zoo Director, you determine the exact number of animals of each species and color from the statements provided. There are always between 1 and 9 animals, and an animal can belong to multiple groups, such as mammals and carnivores.