The Elder Scrolls V: Skyrim

The Elder Scrolls V: Skyrim is a action role-playing open world game played by Markiplier.

Game Information
Skyrim's main story revolves around the player character called Dovahkiin (meaning Dragonborn) and the player's efforts to defeat Alduin the World-Eater, a dragon who is prophesied to destroy the world. The game is set approximately two hundred years after the events of Oblivion and takes place in the fictional province of Skyrim. Over the course of the game, the player completes quests and develops the character by improving skills. Skyrim continues the open world tradition of its predecessors by allowing the player to travel anywhere in the game world at any time, and to ignore or postpone the main storyline indefinitely.

Cancellation
Some time after Mark had uploaded the twenty second part of the playthrough, his computer crashed and all of its data was lost. No further plans were made to continue nor reboot the playthrough.