Timeline

Pacifism is the opposition to war or violence. The word pacifism was coined by the French peace campaigner Émile Arnaud and adopted by other peace activists at the tenth Universal Peace Congress in Glasgow in 1901. A related term is ahimsa, which is a core philosophy in Hinduism, Buddhism, and Jainism. While modern connotations are recent, having been explicated since the 19th century, ancient references abound.

Robert "Toby" Fox (born October 11, 1991) is an American video game developer and composer. He is best known for developing the role-playing video games Undertale and Deltarune. Fox's early work consisted of developing RPG Maker games and creating ROM hacks, including the EarthBound Halloween Hack. Fox then moved on to composing music, including for Andrew Hussie's 2009 webcomic Homestuck.

Linux is a family of free and open-source Unix-like operating systems based on the Linux kernel, which was first released on 17 September 1991 by Linus Torvalds. Some members of the family are typically packaged as a distribution, which includes the kernel alongside supporting system software and libraries developed by third parties—such as GNU, Red Hat, and X.Org—to create a complete operating system; however, not all Linux-based operating systems are considered distros, with Android being an example. Linux was originally designed as a clone of Unix and is distributed under the copyleft GPL license.

Bullet hell , also known as manic shooter, is a subgenre of shoot 'em up video games with large amounts of projectiles the player is required to dodge. Introduced in 1993 with Batsugun and initially limited to vertically scrolling shooters, bullet hell elements were later added to other genres. Pure bullet hell games remain a niche genre due to their high level of difficulty.

EarthBound, originally released in Japan as Mother 2: Gīgu no Gyakushū, is a 1994 role-playing video game developed by Ape Inc. and HAL Laboratory and published by Nintendo for the Super Nintendo Entertainment System. The second entry in the Mother series, it follows a young boy named Ness and his party of Paula, Jeff and Poo, as they travel the world to collect melodies from eight Sanctuaries in order to defeat the universal cosmic destroyer Giygas.

Touhou Koumakyou ~ The Embodiment of Scarlet Devil is a 2002 bullet hell video game developed by Team Shanghai Alice. It is the sixth entry in the Touhou Project series, and the first to be released for Microsoft Windows. It follows either the miko Reimu Hakurei or the magician Marisa Kirisame as they battle enemies through the world of Gensokyo to find the cause of a red-colored mist which has covered the sky in the midst of summer.

SoundCloud is a German audio streaming service owned and operated by SoundCloud Global Limited & Co. KG. The service allows its users to upload, promote, and share audio. Founded in 2007 by Alexander Ljung and Eric Wahlforss, SoundCloud is one of the largest music streaming services in the world and is available in 190 countries and territories. The service has upwards of 76 million active monthly users and over 200 million audio tracks as of November 2021.

Bandcamp is an American online music distribution platform, founded in 2008, with an office and record store in Oakland, California. It was acquired by Epic Games in March 2022 and sold to the music-licensing company Songtradr in October 2023; about half of Bandcamp staff did not receive offers to continue under the new owner.

The Xbox One is a home video game console developed by Microsoft. Announced in May 2013, it is the successor to Xbox 360 and the third console in the Xbox series. It was first released in North America, parts of Europe, Australia, and South America in November 2013 and in Japan, China, and other European countries in September 2014. It is the first Xbox game console to be released in China, specifically in the Shanghai Free-Trade Zone. Microsoft marketed the device as an "all-in-one entertainment system", hence the name "Xbox One". An eighth-generation console, it mainly competed against Sony's PlayStation 4 and Nintendo's Wii U and later the Nintendo Switch.

The PlayStation 4 (PS4) is a home video game console developed by Sony Interactive Entertainment. Announced as the successor to the PlayStation 3 in February 2013, it was launched on November 15, 2013, in North America, November 29, 2013, in Europe, South America, and Australia, and on February 22, 2014, in Japan. A console of the eighth generation, it competed with Microsoft's Xbox One and Nintendo's Wii U and Switch.

Undertale (stylized in all uppercase) is a 2015 role-playing video game created by American 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 magical barrier. The player meets various monsters during the journey back to the surface, some of which may engage in combat. The combat system involves the player navigating through mini–bullet hell attacks by the opponent.

Deltarune is an episodic role-playing video game by American indie developer Toby Fox. Set in a parallel universe to his 2015 game, Undertale, the game follows Kris, a human teenager predetermined to save the world alongside Susie, a monster, and Ralsei, a prince from the Dark World. Throughout the story, the party establishes relationships with a variety of allies and opponents. The game's combat system is turn-based and uses bullet hell mechanics.

Papyrus is a character introduced in the 2015 video game Undertale. He is a skeleton with a large ego who aspires to join the Royal Guard, and also the brother of Sans and friend of Undyne. He is eternally optimistic, and despite wanting to capture the human to prove himself, finds himself befriending the human instead. He does not appear in Deltarune, but has been alluded to. He was created by Toby Fox with support from Temmie Chang. He was originally envisioned as a creepy person who wears a fedora and has no redeeming qualities, though Fox did not like this idea, so he scrapped it. His character communicates with the Papyrus typeface, which had to be changed to a "faux hand-drawn vertical script" when translated into Japanese.

Undyne is a fictional character in the 2015 video game Undertale and episodic video game Deltarune. In Undertale, she is a monster who serves as the captain of the Royal Guard of the Underground under its king, Asgore. She is initially an antagonist to the player character, but depending on the player's actions over the course of the game, she may become their ally, their rival or their nemesis. If the player makes a point of killing every monster possible, Undyne will transform into Undyne the Undying upon death, vowing to destroy the player in order to save all other life from their actions. She is a lesbian, revealed to be in love with Alphys.

Alphys is a character in the 2015 video game Undertale and the 2018 video game Deltarune. She is a bisexual reptilian monster who serves as the royal scientist under the leader of the Underground, Asgore, and is a fan of anime and manga. She is friends with Mettaton, a robot, and the captain of the Royal Guard, Undyne, who in the True Pacifist route becomes her girlfriend. She lives with social anxiety and depression, and the depiction of her struggles with these have been the subject of praise and commentary by critics. She watches the player-character throughout the game, offering guidance at some points, though with limited benefit. She is revealed to have dark secrets, including ones that relate to experimentation. She also appears in Deltarune as a school teacher.

Flowey the Flower is a fictional character and the main antagonist of the 2015 video game Undertale, developed by Toby Fox. Flowey is the first NPC the player encounters in the game and introduces himself as a "friendly" and "helpful" talking flower, before quickly revealing himself to be a malevolent, megalomaniacal, and homicidal entity who abides by a "kill or be killed" philosophy.

Toriel is a character introduced in the 2015 role-playing video game Undertale, acting as the first area boss. A motherly figure created as an embodiment of excessive video game tutorials, she is a member of the monster race and has hanging ears, small horns, white fur, and a purple robe. As with other bosses, the player must choose between killing her and convincing her to stop fighting, dictating the overall direction of the story. She also appears in Deltarune in a different role.

Sans is a character in the 2015 video game Undertale. He is the brother of Papyrus and initially appears as a friendly NPC with an easy-going, laid-back personality. Sans is also featured in the episodic video game Deltarune, where he can primarily be found at his shop, which is a remodeled version of Grillby's Diner from the original game. Sans was created by Toby Fox with support from the artist Temmie Chang. The character's name is based on the Comic Sans font, which is used for most of his in-game dialogue. This sans typeface was replaced with a "cutesy irreverent typeface" in the Japanese version of the game.

The Nintendo Switch is a video game console developed by Nintendo and released worldwide in most regions on March 3, 2017. Released in the middle of the eighth generation of home consoles, the Switch succeeded the Wii U and competed with Sony's PlayStation 4 and Microsoft's Xbox One; it also competes with the ninth-generation consoles, the PlayStation 5 and Xbox Series X/S.

Super Smash Bros. Ultimate is a 2018 crossover fighting game developed by Bandai Namco Studios and Sora Ltd. and published by Nintendo for the Nintendo Switch. It is the fifth installment in the Super Smash Bros.

Kickstarter, PBC is an American public benefit corporation based in Brooklyn, New York City, that maintains a global crowdfunding platform focused on creativity. The company's stated mission is to "help bring creative projects to life". As of April 2025, Kickstarter has received US$8.71 billion in pledges from 24.1 million backers to fund 277,302 projects, such as films, music, stage shows, comics, journalism, video games, board games, technology, publishing, and food-related projects.

GameMaker is a series of cross-platform game engines created by Mark Overmars in 1999 and developed by YoYo Games since 2007. The latest iteration of GameMaker was released in 2026.