A crossword puzzle with numbers — follow the clues to find the proper sequence of numbers that run vertically and horizontally.

Universal Sudoku is the most popular and widely played Sudoku puzzle in the world. Daily delivery keeps players coming back.

Classic Sudoku too small? Try the Monster!

Complete la cuadrícula de manera tal que cada fila, columna y recuadro de 4x4 contenga los siguientes caracteres: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.

Put your cruciverbalist skills to the test with Universal Sunday Crossword! The clever themes and extra-large 21-by-21 grids of this classic puzzle are a hit with fans everywhere!

Comparable to a Sudoku puzzle, substituting letters for numbers, each Unolingo puzzle is a 10x10 crossword without clues.

Up & Down Words, players use crossword-style clues to fill in two-word phrases.

A brainteaser puzzle that will push, pull, twist and bend your mind as you try to decipher the intended phrase or word.