How to play
Guides
A quick rundown of how each game works, with a few tips. Tap through to any game for a longer guide with an example.
None of them give away today's answer.
Daily puzzles
- 1You get six guesses, and every wrong one unlocks a new clue.
- 2Continent and region narrow things down the most. The flag usually gives it away.
- 3If you're going to guess wrong anyway, guess something that tells you something.
- 1One US state a day, six guesses, and a new clue after each miss.
- 2Region and capital tell you where to look. Admission order, flag and landmark help you pick.
- 3Admission order is more useful than it looks.
- 1Each guess tells you how far off you are and which direction the answer is.
- 2Distance is measured from border to border, so big countries can seem closer than they are.
- 3If it says adjacent, you're touching the answer. Try a neighbour next.
- 1Five countries, a blank map, and one submit.
- 2Anywhere inside the right border counts as a perfect pin.
- 3Do the ones you know first and use them to find the rest.
- 1Paint the flag from memory, then see how it compares to the real one.
- 2Big blocks of the right colour score better than fine details.
- 3You get one two second peek, so save it.
- 1Change one letter at a time. Every step has to be a real word.
- 2Work backwards from PISS as well as forwards from the start.
- 3Fewer moves is better, and your first route usually isn't the shortest.
- 1Get from one Wikipedia page to another using only the links on each page.
- 2Every click counts, and so does going back. Time only matters for ties.
- 3Head for big general pages first, like countries or sciences, then narrow it down.
- 1Place reeds to fence the frog in so it can't hop off the edge.
- 2Every enclosed tile is worth 1 point. Lily pads are optional and add a 2-point bonus.
- 3Sometimes it's better to put a reed in the middle of the water than at a gap.
- 1Slide your slime around the room until it fits the drain exactly.
- 2Bump into walls to change shape. Any bit that loses touch with your face gets left behind.
- 3Touch a loose bit to stick it back on. That's how you reshape yourself.
- 1Match five colours a day using Red, Green and Blue sliders.
- 2You can't see your mix. Each colour round gets one three second peek.
- 3Each colour is worth 100, based on how close it looks to the target.
- 1Five quick visual tests a day, the same for everyone.
- 2Each test is worth 100, so 500 is a perfect day.
- 3Speed doesn't count. Take your time where you can.
- 1Fifteen prizes follow a secret rule. One doesn't. Grab that one.
- 2You get three coins per round. Fewer coins used means more points.
- 3There's a hint for each round, like Habitat or Season.
- 1Ten questions a day. Each one compares two numbers. Pick the higher one.
- 2A right answer takes you up a floor. A wrong one leaves you where you are.
- 3Use the Express ride to bet: two floors up if you're right, one down if you're wrong.
- 1Five rounds a day, each worth 100 points.
- 2Pick which cost more, put items in price order, or guess a price.
- 3Prices are what they cost in the US at launch, not adjusted for inflation.
- 1Two callers each say a word. Find the word that links them both.
- 2The wrong options each fit one word, but never both.
- 3Five calls a day. Your score is how many you get on the first try.
- 1Five boxes, one hidden rule. Find the box that breaks it.
- 2Tap a box that fits the rule and it counts as a mistake.
- 3Five shipments a day, getting harder as you go.
- 1Tap a letter to squeeze it out of today's word.
- 2Every step must still be a real word.
- 3Your score is the length of your chain. Par is the longest possible.
- 1Five questions a day with no right answer.
- 2Vote, then predict the share of players who said yes.
- 3Each question scores 100 minus how far off you were.
- 1One shared target and one finalized result each day.
- 2No ticking, moving hands, timer or progress bar while you count.
- 3Exact timing earns 100 points. Early and late cost the same.
- 1One question a day, one locked-in number.
- 2The goal is the crowd's average, not the true answer.
- 3Results, a chart of every answer and your ribbon arrive after midnight.
- 1Three outlines, one real, two subtly warped.
- 2Press and drag on a sheet to look through the loupe.
- 3The fakes get subtler with every round.
- 1Three stacks a day, each worth up to 100 points.
- 2Drag the stack up or down. The count shows as you go.
- 3Scoring is on ratios, so 2× off is 50 points for big and small answers alike.
Daily races
- 1A new track every day, the same for everyone.
- 2Practice is unlimited. You only get one official run, so do it when you're ready.
- 3You can also race friends in party mode or go back to old tracks to beat your best time.
- 1A new downhill course every day, the same for everyone.
- 2Practice as much as you want, then do your one official run when you're ready.
- 3Or skip the race and ride the open mountain with anyone who's online.
Why I built Deduce
A bit of background on where the site came from, what I was trying to do differently, and why there are so many games instead of one.
Read the storySomething look wrong?
Deduce is built and maintained by one person, so mistakes get through. If a clue looks incorrect or an answer you were sure about was rejected, the contact page is the fastest way to flag it. Include the game and the date and it will get looked at.