Sudoku Fog:Daily Number Puzzle

TriTail Studio

Contains adsIn-app purchases

About this game

Sudoku Fog puts a unique twist on Sudoku, with classic puzzles and a growing collection of challenging variants.

HOW IT WORKS
• Place the right number → fog lifts from that cell and its neighbours
• The sharper your solve, the more of the board you uncover
• Wrong moves keep the fog in place — no free reveals
• Clear the whole board to lift all the fog and lock in your time

SUDOKU VARIANTS
Go beyond classic Sudoku with 10+ variants, each introducing a different way to reason through the fog.

Master individual rules such as Thermometer, Kropki, Arrow, XV, Consecutive and Renban — then take on hybrid puzzles that combine multiple rules for an extra challenge.

DAILY CHALLENGE
A new puzzle every day at midnight UTC, the same for every player worldwide. Solve it, beat your best time and keep your streak alive. On weekends, take on a special Masterpiece puzzle.

GLOBAL LEADERBOARDS
Compete on Best Times, Hardcore, Career and Streak boards — plus a weekend Hall of Fame. No email or sign-up: just pick a nickname.

CULINARY JOURNEY
Travel the world through Sudoku. Complete countries to unlock neighbouring regions, discover beautifully illustrated local dishes, and build your gourmet gallery across 10 countries.

MORE
• Smart Notes — auto-updating pencil marks that prune themselves as you solve
• Smart Hints — a gentle focus nudge first, then a fill when you're truly stuck
• Achievements — dozens to earn as you master the fog
• Offline play — no connection needed for the puzzles
• 9 languages — English, 繁體中文, 简体中文, 日本語, 한국어, Français, Deutsch, Español, Português
• Dark mode — light, dark, or follow system

CLEAN & MINIMAL
No countdown timers forcing you to rush. No energy bars. No pop-ups mid-puzzle. Just you and the fog.

What’s new

Five new puzzle variants join the fog: Odd/Even, Consecutive, XV, Arrow and Renban. Odd/Even is free for everyone; the other four unlock with variant points, and Pro has all of them from the start.
Mixed variants: four hand-picked pairs put two sets of rules on the same grid, playable as soon as you hold both variants.
A new Random option draws your next puzzle from everything you can currently play.