A free program for Android, by Wingtree.
The Why?! games are a set of four riddles that can be played in groups of two to four players. Each puzzle is divided into four difficulty levels, so that they can be solved in a matter of minutes, hours, or even days if you are really lucky. The most difficult riddles can be solved only by a few players in a group.
Why?! is based on the idea that we are all connected, that everything is connected and that there is a lot of mystery in this world. In other words, we are all part of the same universe and we all have a lot of knowledge that is hidden from us.
The answer to every riddle is hidden in the text of the riddle itself. You have to read the text carefully to find the answer.