Voting rules: Choose the puzzle game you think is the most difficult!
This is a community-based ranking of the most difficult puzzle game. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or puzzle is missing, feel free to help improve the ranking!
A participant may cast an up or down vote for each puzzle once every 24 hours. The rank of each puzzle is then calculated from the weighted sum of all up and down votes.