In Dear Esther you will find yourself having to explore an entire island of the Hebrides group, accompanied by a pleasant background music and by reading some letters addressed to a woman named Esther. These stories can be listened to when reaching specific points on the island, and are chosen in a completely random manner. To fully understand the plot it will be necessary to actively listen to the narrator and complete exploration, so as not to omit any details.
Here are the videos of the solution:
PART I
PART II
PART III