• Each Puzzle starts with few guesses and match-clues.
• Check Group, Period, Block and State attributes to see what matched (=) and what didn't (≠). Use these for deduction.
• Also check revealed color of your guess.
  If it's Red, guess a alphabetically lower name.
  If it's Blue, guess a alphabetically higher name.
  If first few letters are Green, those are correct starting letters. Guess another name that starts with the same green letters.
  Black and Gray letters provide no other clues.
  The exact match is found, alphabetically, between the "hot" (red) and "cold" (blue) clue names.

  Red is hot, go colder - move toward the beginning of the alphabet (towards A).

  Blue is cold, go warmer - move toward the end of the alphabet (towards Z).
• Refine your guess using revealed match clues.
• Repeat (until correct Periodic Table Element is identified).

More info

• 🥚 The Egg indicates you missed a previous clue. Avoid getting many Eggs. Up to 7 Eggs (clue errors) are allowed in Practice Level, 5 Eggs in Challenge Level and no Eggs in Superpro Level.
• ⚡ indicates you missed a high voltage attribute clue. Practice Level allows one high voltage clue error, before game ends. In all other difficulty levels, you lose as soon as you miss any high voltage attribute clue (marked ⚡).
• A green flag indicates a good guess (clean with no Eggs).
• A red flag indicates a wrong guess (one or more attributes with Eggs).
• A red open envelope indicates you lost - actual name is revealed.
• Correct Periodic Table Element is revealed after 7th try (or if you match or lose early).
• A progress bar shows how close you are to the actual match.

Sample gameplay

Here is a sample gameplay. Based on first two guesses, the actual name should start alphabetically between M and T.

• Group - Group# (1 to 18)
• Period - Row#
  1 2 3 4 5 6 7
• Block - Block
  s-block f-block d-block p-block
• State - State on room temperature
  solid liquid gas unknown phase

• A Blue guessed name is alphabetically lower than the actual name. Move toward the end of the alphabet (towards Z) for next guess.
• Red guessed name is alphabetically higher. Move toward the beginning of the alphabet (towards A) for next guess.
• A Green guessed name indicates actual Periodic Table Element has this same first few green letters. Guess another name that starts with highlighted green letters.
• Color clues for 2nd letter are revealed after first letter is matched.
• Black letters reveal no clues. You can ignore them.
• Correct Periodic Table Element is revealed after 7th try (or if you lose or match or give up early).

• Type first 3 letters (4 letters in Pro/Superpro mode) of the guessed name. Don't type more than 7 letters if you want to use matching names list feature.
• Wait for the dropdown list of matching names to appear - don't submit yet. It typically takes less than a second, or a few seconds at most. If matching names list doesn't appear, try first 3 letters (4 if pro/superpro) of another name/spelling.
• Choose a name from the matching names list. Then hit Submit button.
• If matching names list doesn't appear for the letters you typed, it indicates no matching name was found. In that case, please try a different spelling or another name. Our database is constantly growing; some names may be missing temporarily.

Here is a sample matching names list.

🥚 The Egg indicates you missed a previously revealed clue.

There is a max limit on how many Eggs you can have before you lose in each level. Try to make the most of the clues - avoid getting many Eggs. More Eggs you get, the lower your score, even if you win.

It could be either a name clue (color highlighted letters) or attribute match clue that you missed. For example, if first letter of the name you guessed is highlighted blue M and your next guess starts with G, then you'll get the Egg for this error. Blue letters are colder - you should move toward the end of the alphabet (towards Z) for next guess.

• Level 1 - Practice Level - max 7 Eggs
• Level 2 - Challenge Level - max 5 Eggs
• Level 3 - Precision level - max 3 Eggs
• Level 4 - Pro level - max 1 Egg
• Level 5 - Superpro Level - no Eggs

Customize the gameplay difficulty to challenge your brain. Warm up your memory with Practice Level. Switch to Challenge Level for a max score of 100 points. Superpro Level is the most difficult level - the game ends as soon as you miss any clue.

Select a short catchy screenname for yourself - maximum 25 letters and no special characters. Your username can be shared publicly so please be mindful.

Optionally, you can leave it as blank. If you don't select a username, it will appear as a autogenerated identifier.

We log your username (aka screenname) with your gameplays.

We may use your screename/username to display it publicly on the leaderboards, game replays and on other public features. By adding a screenname you are consenting to the public display of your screename and gameplays. You can leave the screenname as blank if you don't want your screenname to be shared publicly.

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