Markiplier played a SpongeBob horror game called "Nightmare in Squidville" on YouTube. In the game, he searches for Squidward in a creepy town, encountering strange events and enemies. Eventually, he saves Squidward and the game concludes with credits and a surreal ending. The gameplay was eerie and the credits included extensive attributions even down to fonts. Markiplier was left baffled and impressed by the experience, and he thanked his viewers for watching.
Sure, here are the key facts extracted from the provided text:
1. The game being played is a SpongeBob horror game called "Nightmare in Squidville."
2. The player controls a character and is searching for Squidward.
3. Squidward has been missing and is in trouble.
4. There are mysterious and unsettling events happening in the game.
5. Squidward is found trapped in a cage and warns of cannibals in Tentacle Acres.
6. There's a burning leaf blower that plays a role in the game.
7. The game has an eerie and creepy atmosphere.
8. The player experiences a sense of confusion and danger.
9. The game has an extensive list of credits at the end.
Please note that these facts are based on the text provided and do not include any opinions.