Check out Unlimited Mode (die icon) and Speedrun Mode (in settings)!
Guess the word in 6 tries. After each guess, the color of the tiles will change to show how close your guess was to the word.
The word will consist of a sequence of nonmetal and metalloid elemental symbols from the periodic table. All valid guesses must be words made from these symbols as well. (Note: keyboard typing has not yet been implemented on PC.)
The symbol Xe is in the word and in the correct spot.
The symbol H is in the word but in the wrong spot.
The symbol Rn is not in the word in any spot.
This is an open source version of the word guessing game we all know and love - check out the code here