Undertale

Undertale is a role-playing video game played by Markiplier. Undertale was almost entirely developed by Toby Fox, with only artwork and sprites being supplied by other creators, mainly freelance artist Temmie Chang. Fox's work on the game garnered him numerous awards and critical acclaim, with Undertale being widely considered as a cult video game.

Game information
In this RPG, you don't have to kill anyone. Each enemy can be "defeated" nonviolently. Dance with a slime. Pet a dog. Whisper your favorite secret to a knight. Or, ignore this choice and rain destruction upon your foes. But your journey will take determination. Each adversary has unique bullet patterns that you must dodge as well. Emphasis on humor, character dialogue, and player choice.

Initial cancellation and second playthrough
During the "Depression and Bipolar Support Alliance Charity" livestream, Mark announced that he was not planning on continuing his Let's Play of the game, stating that the community rallied around it for different reasons than he wanted. Mark initially wanted to try and play Undertale in his own way, but ultimately decided to drop the playthrough altogether and would rather play the game in his own time. In a ClusterTruck livestream, Mark cited that the reasons for abandoning his first playthrough were due to the Undertale fandom criticizing the voices he used for the characters, spoiling the game's plot and attempting to push a specific playstyle on him, proclaiming that Mark "wasn't playing the game right."

Due to its similar circumstances, Undertale, much like Vanish, became a running joke within his community, until Mark announced a possible livestream in the future. On October 13, 2016, Mark started livestreaming his second playthrough of the game, alongside Tyler Scheid, and later joined by Ethan Nestor-Darling, Amy Nelson, and Kathryn Knutsen.

Gameplay

 * 1) AN EPIC ADVENTURE
 * 2) CHILD OF MERCY

Livestream

 * 1) ONCE MORE, WITH FEELING!
 * 2) SO MANY EMOTIONS!
 * 3) UNDYNE TO MEET YOU
 * 4) METTATON = MARKIPLIER
 * 5) IT'S GETTING HOT IN HERE
 * 6) NEARLY THERE...
 * 7) IT ALL ENDS HERE