This post will be the first in a series concentrating on puzzles in games, with special focus on horror games. To start this up I would like to discuss why puzzles are needed at all. Is it really necessary to have puzzles in game when it might detract from story, immersion, etc? In order to be a game, there needs to be some kind of interaction. I think this is pretty much the most basic feature of a game - no interaction, no game. In order to be engaging there also needs to be some kind of challenge, if the player simple makes arbitrary choices then the game is awfully close to interactive storytelling (not be mixed up with IF ) instead. Even in the most linear story games, there is always something blocking progression, something that needs to be taken care of before the game advances. In Fahrenheit (aka Indigo Prophecy) the player presses random buttons and in the IF game Photopia the player needs to do the correct action. Both of these games are (in my option at least) are very cl...