ChronoFive
A fun, daily history game where you get 5 events and have to guess the years that they occurred!
Events get harder as the puzzle goes on.
See how you do on the leaderboard!
puzzled.online
Just open and play a puzzle a day.
Hardest online puzzles
If you’re hunting for the hardest online puzzles, “brain busters” is a fun label, but searchers tend to be clearer than that. They want challenging logic puzzles, difficult deduction games, tough number games, and browser puzzles that demand more than a quick guess.
This page gathers the toughest-looking part of the puzzled.online catalogue and then orders it by rating. The result is a high-difficulty shortlist of logic, deduction, math, and spatial games that players have already responded well to.
Think of it as the serious end of the directory: less casual filler, more genuine head-scratchers.
Curated collection
Top-rated matches from the directory
Ratings and favourites work in this browser with anonymous sessions enabled.
recall.
memorization game where you are shown words, you memorize them, and type back what you remember.
Sections puzzle
Sections is a free daily number logic puzzle. You're given a grid divided into sections by thick bars, fill each section with numbers 1 through its length, no repeats. It's like Sudoku but with variable-sized groups.
Infinite Puzzles
Practice your favorite professional networking brain teasers. Play unlimited, algorithmically generated grids of Crowns, Sun and Moon, Pathfinder, Rectangles, and Sudoku.
Dimension Flux
Daily Inter-Dimensional Logic puzzle.
anoun
Guess a word to learn what it has in common with the hidden word.
Bulls & Cows — Bull Rush
Unique-solution daily deduction puzzle with emoji feedback.
Alibi
Alibi is a daily cozy-mystery logic puzzle. A death overnight, a household with statements — every word of them true, but only one arrangement of people and implements fits all of them at once. Read the rail, place each suspect and every piece of evidence back where they belong.
Jhakkasra: Optimized 3x3 Sliding Puzzles
A high-precision 3x3 sliding puzzle platform where difficulty is based on optimal move counts. Challenges range from Beginner (10 moves) to Legendary levels requiring 30 optimized moves. Features 10,000+ puzzles, daily streaks, and multi-language support.
Stepwords
Daily word-ladder style challenge in your browser.
Daily Connections
Find hidden connections between 16 words. Group them into 4 categories with increasing difficulty. Share your daily results!
Math Minute Challenge
It could take more than a minute ;)
Ball Sort Star
Best ball sort app in the App Store! Free, no in-app purchases, no money ever.
Clue Raider
Find the hidden relic by placing each person in the tomb grid based on their clues.
Dodeku
Solve the grid by matching sums
Gerrymandle
Gerrymander the map to win the election.
Griductive
A daily deductive logic puzzle — classify suspects and innocents on a grid using pure reasoning. No guessing, no luck. Three difficulty sizes, fresh puzzles every day.
Hunch
Wordle meets Mastermind. Daily challenges, tons of features, and PvP!
Moadly - Train your Brain
Train your brain, and keep a sharp mind anytime, anywhere
Pell Puzzles
Fill a 6x6 grid with 8 paths of lengths 1-8. Connect X to O for each path, avoiding 2x2 blocks and self-touching paths. Daily puzzle with timer.
Picas Y Fijas
Deduction logic Bulls and Cows game with a clean interface and no ads.
SUMS
SUMS is a daily number-placement puzzle where the arithmetic is simple, but the spatial reasoning is the challenge.
Septonum
Daily mental math challenge
Shifto
Move the tiles to recreate the pattern.
Sixth Chain
A logic-based connection puzzle using words and facts, with multiple themes to choose from.
Spectra
Sort the items by deducing the hidden metric. Multiple metrics could be used to sort the items, so you must deduce which metric is being used by analyzing the feedback provided after each submission. Every day, a new puzzle is released. Includes stats, leaderboards, and more…
Sudoku
High quality, ads free, mobile friendly daily Sudoku game.
Summit
A daily number pyramid puzzle where you rearrange tiles so each number equals the sum of the two below it.
Wardle
Wardle is a free daily vehicle guessing game inspired by Wordle and based on War Thunder. Each day a mystery military vehicle is chosen and players guess which it is using spec-based feedback testing both knowledge and deduction in a fun, strategic challenge.
How is “hardest” defined on this page?
The directory does not currently store a dedicated global difficulty score for every listing, so this page uses a practical editorial proxy: it focuses on categories that usually skew harder—logic, deduction, math, and spatial—and gives extra weight to games described as hard, challenging, expert, fiendish, or difficult.
Within that filtered set, the list is still ordered by rating so the best-liked tough puzzles rise first.
More ways into the directory
These supporting collection pages help puzzled.online cover adjacent search intent without forcing every player through the homepage first.