Undertale is a 2D role-playing video game created by indie developer Toby Fox. The player controls a child who has fallen into the Underground: a large, secluded region under the surface of the Earth, separated by a magic barrier. The player meets various monsters during the journey back to the surface. Some monsters might engage the player in a fight. The combat system involves the player navigating through mini-bullet hell attacks by the opponent. They can opt to pacify or subdue monsters in order to spare them instead of killing them. These choices affect the game, with the dialogue, characters, and story changing based on outcomes.

Outside of some artwork, Fox developed the entirety of the game by himself, including the script and music. The game took inspiration from several sources, including the Brandish, Mario & Luigi, and Mother role-playing series, bullet hell shooter series Touhou Project, role-playing game Moon: Remix RPG Adventure, and British comedy show Mr. Bean. Originally, Undertale was meant to be two hours in length and was set to be released in mid-2014. However, development was delayed over the next three years.

The game was released for Microsoft Windows and OS X in September 2015. It was also ported to Linux in July 2016, PlayStation 4 and PlayStation Vita in August 2017, the Nintendo Switch in September 2018, and Xbox One in March 2021. The game was acclaimed for its thematic material, intuitive combat system, musical score, originality, story, dialogue, and characters. The game sold over one million copies and was nominated for multiple accolades and awards. Severalgaming publications and conventions listed Undertale as game of the year. The first chapter of a related game, Deltarune, was released in October 2018.

Taken from https://en.wikipedia.org/wiki/Undertale

"Hey Jude" is a song by the English rock band the Beatles that was released as a non-album single in August 1968. It was written by Paul McCartney and credited to the Lennon?McCartney partnership. The single was the Beatles' first release on their Apple record label and one of the "First Four" singles by Apple's roster of artists, marking the label's public launch. "Hey Jude" was a number-one hit in many countries around the world and became the year's top-selling single in the UK, the US, Australia and Canada. Its nine-week run at number one on the Billboard Hot 100 tied the all-time record in 1968 for the longest run at the top of the US charts. It has sold approximately eight million copies and is frequently included on music critics' lists of the greatest songs of all time.

The writing and recording of "Hey Jude" coincided with a period of upheaval in the Beatles. The ballad evolved from "Hey Jules", a song McCartney wrote to comfort John Lennon's son, Julian, after Lennon had left his wife for the Japanese artist Yoko Ono. The lyrics espouse a positive outlook on a sad situation, while also encouraging "Jude" to pursue his opportunities to find love. After the fourth verse, the song shifts to a coda featuring a "Na-na-na na" refrain that lasts for over four minutes.