Press keys to try and guess what the hidden word is. If you lose, press the flag to try again with a new word.
30 Blocks. If changing the word and starting a new game are not requirements, this could be counted as 26 blocks since the lists and variables can be set for one game with one word. Resetting would then require a page refresh. With further optimization when only requiring one game, I could make it use only 24 Blocks by utilizing a list for the hidden word.