Games Like Cat Sudoku
Killer Sudoku, Kakuro and KenKen are close choices if you enjoy placing numbers. Nonograms, Slitherlink and Hitori use similar elimination skills with different goals. For a change of pace, 2048 turns number tiles into a sliding game.
These are seven real puzzle games, not extra modes of Cat Sudoku. The links below lead to their creators, publishers or puzzle providers.
Killer Sudoku
Killer Sudoku keeps the familiar 9×9 board: each row, column and 3×3 box must contain 1–9 once. Outlined groups called cages add a second clue: the numbers in each cage must total its marked sum, with no repeated digit inside the cage.
Try it if: you want ordinary Sudoku logic plus sums, often with fewer starting numbers.
Killer Sudoku Online ↗Kakuro
Kakuro looks like a crossword made of numbers. Fill white cells with digits 1–9 so that each horizontal or vertical run adds up to its clue. A digit cannot repeat within the same run. Unlike Sudoku, the clues describe sums, and the grid includes blocked cells.
Try it if: you like narrowing down number combinations and do not mind a little addition.
Nikoli's Kakuro rules ↗KenKen
In an N×N KenKen grid, place numbers 1–N without repeats in a row or column. Each outlined cage must reach a target using its shown arithmetic operation. A one-cell cage contains its target number. There are no Sudoku-style 3×3 boxes.
Try it if: you want smaller number grids or puzzles that combine placement with arithmetic.
Official KenKen puzzles and rules ↗Nonograms
A Nonogram uses number clues beside each row and column to describe consecutive groups of filled cells. For a black-and-white puzzle, leave at least one empty cell between groups. Work out which cells are filled and which are empty to reveal a picture.
Try it if: you enjoy cross-checking rows and columns but would rather draw a picture than place digits.
Nonogram rules and puzzles ↗Slitherlink
Connect neighboring dots with horizontal or vertical lines to make one closed loop. A numbered cell tells you how many of its four sides belong to the loop. The loop cannot branch or cross itself. Empty cells do not impose a number clue.
Try it if: you like making deductions from nearby clues and want a puzzle without entering numbers.
Nikoli's Slitherlink rules ↗Hitori
Hitori starts with a grid already full of numbers. Shade cells until no number repeats among the unshaded cells in a row or column. Shaded cells cannot share an edge, and all unshaded cells must remain connected horizontally or vertically.
Try it if: you like Sudoku's no-repeat rule and want to remove numbers rather than fill blanks.
Nikoli's Hitori rules ↗2048
Slide the tiles on a 4×4 board with the arrow keys. Two matching tiles merge when they meet, and a new tile appears after a move that changes the board. Build larger values to reach 2048. Unlike Sudoku, each move changes the whole board and the next tile introduces uncertainty.
Try it if: you want a faster sliding puzzle between slower logic games.
Gabriele Cirulli's 2048 ↗Which one should I try first?
Choose Killer Sudoku if you want to keep all three Sudoku constraints. Choose Kakuro or KenKen for arithmetic clues, Nonograms for pictures, Slitherlink for loops, or Hitori for shading. 2048 is the outlier: a sliding tile game rather than a fixed, fully determined logic grid.
If you are still learning Sudoku, start with how to play Cat Sudoku, then play Cat Sudoku on Easy.
Rules and links checked on October 14, 2026. Rules are summarized from the linked sources. Cat Sudoku is an independent site and is not affiliated with these games or providers. Their availability and terms may change.