Anonymous;Code is a visual novel video game developed by Mages and Chiyomaru Studio, and is the sixth mainline entry in the Science Adventure series.

Pollon initially just has Cross and Wind as friends to help him out, but gradually makes more friends and allies such as Tengen Ozutani (a private detective and former astronaut), Nonoka Hosho (a young girl and child prodigy who invents many gadgets), Liddie Kumar (a brilliant mathematician and online influencer), Rosario Rossellini (a Vatican assassin and skilled fighter who is fiercely loyal to Momo), and the Cyber Force Dolls (a trio of young police officers who solve cybercrimes and are also an idol group).

One night, Pollon comes across a teenage girl called "Momo Aizaki" being abducted by soldiers from the mysterious Special Forces Group led by Graham Kingley.

She explains that Kent was forced to help the Vatican develop their own Earth Simulator, Necro Pilgrimage, and accidentally uncovered the real Third Secret of Fátima, which predicted that the world will end on January 19, 2038.

Another foe Pollon faces when trying to solve the quests is JUNO, Kent Korihisa's obsessive yandere sister who has the power of quantum teleportation.

Meanwhile, Pollon and Momo get help from JUNO to infiltrate the Gai Institution to secure Miori's safety, right as the Special Forces Group is sent to raid the facility by the Japanese government.

However, no matter how many times Pollon tries, Miori is killed, and Asuma manifests godlike powers, becoming an unstoppable force of mass destruction fueled by his nihilism.

Pollon distracts Asuma while his friends smuggle Momo into the Vatican so she can directly connect to Necro Pilgrimage and force the world reset.

Momo's data is stored using the "galaxy" from the Game of Life, the symbol that appears as a cyan-colored AR tattoo on the left cheek of her face when she is viewed through BMI.

[3][4] However, both games were later incorporated into the Science Adventure series, with Occultic;Nine and Anonymous;Code serving as the fifth and sixth main entries in the franchise respectively.

[7] Shikura stated that he initially wanted to increase the game's immersion by applying a unique artwork to every scene and using full animation during major events.

However, he realised the game would need at least 3000 pieces of artwork (in contrast to the usual 100 found in visual novels), not counting the costs to produce the animations, and thus discarded this idea.

His research on how to lower the costs of an immersive visual novel led him to consider reusing old animation, developing Steins;Gate Elite from this idea.

[15] An official English language localization was announced on July 2, 2022 and released by Spike Chunsoft worldwide on September 8, 2023 for PlayStation 4, Nintendo Switch and Windows.

[19] Oliver Shellding of WayTooManyGames was critical of the saving and loading mechanic, but lauded the game overall, noting: "If a visual novel can cause you to question existence, it's doing something right.