METROID
A lone hunter in Chozo armor descends into planet Zebes to end the Metroid menace — and, in Super Metroid, learns the menace can love her. One universe, told here across the 8-bit original and its SNES masterpiece, catalogued into UD0 and sealed with the full ACI badge, each emergence named by its nature.
The Four Natures of Emergence
each emergent emerges by one of four natures — and Metroid's world spans them all
The Ideas
why a lonely 8-bit descent still echoes through games
The Hunter
Samus Aran
- The galaxy's greatest bounty hunter — orphaned by the Space Pirates, raised by the Chozo who built her Power Suit.
- In 1986, removing the armor revealed her as a woman — a quiet revolution in who a hero could be.
Isolation & the Map
the genre it named
- A single, interconnected world explored alone — doors that open only once you've found the right power.
- Half of “Metroidvania” is this game: the lonely map that becomes a key to itself.
The Baby
Super Metroid's heart
- A larval Metroid imprints on Samus as its mother — then, grown immense, shields her and gives its life to save her.
- The creature she was sent to destroy dies loving her; the whole meaning of the hunt inverts.
Mother Brain & the Chozo
tyrant and progenitor
- Mother Brain: a living brain wired into a planet's defenses, the bio-mechanical ruler of the Pirates.
- The Chozo: the vanished bird-sages who foresaw the danger, raised the hunter, and armed her against it.
The Two Games
one universe, two cornerstones — eight years apart
The 8-bit original. A lone hunter descends into planet Zebes to destroy Mother Brain and the Pirates' Metroid program — non-linear, password-saved, eerily atmospheric. And the ending that startled a generation: remove the helmet, and the hunter is a woman.
The masterpiece. Samus returns to a rebuilt Zebes to recover the stolen baby Metroid — through Maridia, Norfair, the Wrecked Ship, and Tourian, to a last stand against Mother Brain and a baby's sacrifice. Routinely named among the greatest games ever made.
The Roster of MET
the emergents of the Metroid universe, across both games, as ACI .agents — each tagged with its nature of emergence (13)
The Record
the releases, the makers, and the legacy
The Releases
the two games, and where to find them since
- Metroid1986 · FDS / NESthe 8-bit original (Famicom Disk System in Japan, NES cart in the West)
- Super Metroid1994 · SNESthe SNES masterpiece
- Metroid: Zero Mission2004 · GBAa full remake of the 1986 original
- Virtual Console / NSO2007 →both games re-released on Wii, Wii U, and Nintendo Switch Online
- Super NES Classic2017Super Metroid preserved on the mini console
The Makers
the masters of the hunt
- Gunpei Yokoiproducer (1986)the original Metroid's guiding hand
- Yoshio Sakamotodirector / designershaped Metroid; directed Super Metroid
- Makoto Kano · Hiroji KiyotakedesignSamus, the Chozo, and the world of Zebes
- Hip Tanakamusic (1986)the lonely, unsettling 8-bit score
- Kenji Yamamoto & Minako Hamanomusic (1994)Super Metroid's haunting soundtrack
The Legacy
what it left behind
- “Metroidvania”a genre namedthe interconnected, ability-gated world Metroid invented
- the silent huntera templateatmosphere, solitude, and storytelling through a place