Puzzle games require the gamer to be focused and willing to solve puzzles, because in such games the entire gameplay will be connected with this: there is a whole list of quests where you need to find objects in a partially open world and find a use for them. There are simpler games, in which the player only needs to find things from a list in a huge room littered with all sorts of unnecessary rubbish.
Despite the noticeable differences between some of the puzzles, they all have one thing in common - gamers need to be prepared for mandatory brain work.
This list contains the best puzzle games, without reference to the year of release or gameplay features.