The Ecology Initiative is a focused effort to record every unique life form found across the entire body of Halo media.
The project aims to catalogue each life form, highlight previously unknown details about the Halo universe from these organisms' ecological roles, and eventually publish a Wildlife of Halo reference book showcasing the art and science of the Halo universe.
Pages Updated/Reviewed
Works Catalogued
Games
| Title
|
Catalogued
|
Notes
|
| Halo: Combat Evolved (campaign levels)
|
✅
|
|
| Halo: Combat Evolved (cutscenes)
|
|
|
| Halo: Combat Evolved (multiplayer levels)
|
✅
|
|
| Halo 2 (campaign levels)
|
✅
|
Earth levels not catalogued
|
| Halo 2 (cutscenes)
|
|
|
| Halo 2 (multiplayer levels)
|
✅
|
Earth levels not catalogued
|
| Halo 2 (DLC)
|
✅
|
Earth levels not catalogued
|
| Halo 3 (campaign levels)
|
✅
|
Earth levels not catalogued
|
| Halo 3 (cutscenes)
|
|
|
| Halo 3 (multiplayer levels)
|
✅
|
Earth levels not catalogued
|
| Halo 3 (DLC)
|
✅
|
Earth levels not catalogued
|
| Halo Wars (campaign levels)
|
✅
|
|
| Halo Wars (cutscenes)
|
|
|
| Halo Wars (multiplayer levels)
|
✅
|
|
| Halo Wars (DLC)
|
|
|
| Halo 3: ODST (campaign levels)
|
|
|
| Halo 3: ODST (cutscenes)
|
|
|
| Halo 3: ODST (multiplayer levels)
|
|
|
| Halo Reach (campaign levels)
|
✅
|
|
| Halo Reach (cutscenes)
|
|
|
| Halo Reach (multiplayer levels)
|
✅
|
|
| Halo: Combat Evolved Anniversary (campaign levels)
|
✅
|
|
| Halo: Combat Evolved Anniversary (cutscenes)
|
|
|
| Halo: Combat Evolved Anniversary (multiplayer levels)
|
✅
|
|
| Halo Combat Evolved: Anniversary (terminals)
|
✅
|
|
| Halo 4 (campaign levels)
|
✅
|
|
| Halo 4 (cutscenes)
|
|
|
| Halo 4 (multiplayer levels)
|
✅
|
|
| Halo 4 (terminals)
|
✅
|
|
| Halo 4 (Spartan Ops)
|
✅
|
|
| Halo 4 ("Halo: Infinity" cutscenes)
|
|
|
| Halo: Spartan Assault (campaign levels)
|
✅
|
|
| Halo: Spartan Assault (cutscenes)
|
✅
|
|
| Halo: Spartan Assault (campaign levels)
|
✅
|
|
| Halo 2: Anniversary (campaign levels)
|
✅
|
Earth levels not catalogued
|
| Halo 2: Anniversary (cutscenes)
|
|
|
| Halo 2: Anniversary (multiplayer levels)
|
✅
|
Earth levels not catalogued
|
| Halo 2: Anniversary (terminals)
|
✅
|
|
| Halo: Spartan Strike (campaign levels)
|
✅
|
|
| Halo: Spartan Strike (cutscenes)
|
✅
|
|
| Halo 5: Guardians (campaign levels)
|
|
|
| Halo 5: Guardians (cutscenes)
|
|
|
| Halo 5: Guardians (multiplayer levels)
|
|
|
| Halo Online
|
|
|
| Halo Wars 2 (campaign levels)
|
|
|
| Halo Wars 2 (cutscenes)
|
|
|
| Halo Wars 2 (multiplayer levels)
|
|
|
| Halo Wars 2 (DLC)
|
|
|
| Halo: Fireteam Raven
|
|
|
| Halo Infinite (campaign levels)
|
|
|
| Halo Infinite (cutscenes)
|
|
|
| Halo Infinite (multiplayer levels)
|
|
|
Books
| Title
|
Catalogued
|
Notes
|
| Halo: The Fall of Reach
|
✅
|
|
| Halo: The Flood
|
✅
|
|
| Halo: First Strike
|
✅
|
|
| Halo: Ghosts of Onyx
|
✅
|
|
| Halo: Contact Harvest
|
✅
|
|
| Halo: The Cole Protocol
|
✅
|
|
| Halo: Evolutions
|
✅
|
"Mona Lisa" not catalogued
|
| Halo: Cryptum
|
✅
|
|
| Halo: Glasslands
|
✅
|
|
| Halo: Primordium
|
✅
|
|
| Halo: The Thursday War
|
✅
|
|
| Halo: Silentium
|
✅
|
|
| Halo: Mortal Dictata
|
✅
|
|
| Halo: Broken Circle
|
✅
|
|
| Halo: New Blood
|
✅
|
|
| Halo: Hunters in the Dark
|
✅
|
|
| Halo: Saint's Testimony
|
|
|
| Halo: Last Light
|
✅
|
|
| Halo: Shadow of Intent
|
|
|
| Halo: Fractures
|
|
|
| Halo: Smoke and Shadow
|
|
|
| Halo: Envoy
|
|
|
| Halo: Retribution
|
|
|
| Halo: Legacy of Onyx
|
|
|
| Halo: Bad Blood
|
|
|
| Halo: Silent Storm
|
|
|
| Halo: Battle Born
|
|
|
| Halo: Renegades
|
|
|
| Halo: Oblivion
|
|
|
| Halo: Meridian Divide
|
|
|
| Halo: Shadows of Reach
|
|
|
| Halo: Point of Light
|
|
|
| Halo: Divine Wind
|
|
|
| Halo: The Rubicon Protocol
|
|
|
| Halo: Outcasts
|
|
|
| Halo: Epitaph
|
|
|
| Halo: Empty Throne
|
✅
|
|
| Halo: Waypoint Chronicles - Volume One
|
|
|
| Halo: Edge of Dawn
|
|
|
Movies
| Title
|
Catalogued
|
Notes
|
| Halo: Legends
|
✅
|
|
| Halo: Evolutions - Motion Comics
|
✅
|
"Headhunters", "Midnight in the Heart of Midlothian", "The Mona Lisa", "The Return"
|
| Halo 4: Forward Unto Dawn
|
✅
|
|
| Halo: Nightfall
|
✅
|
|
| Halo: The Fall of Reach - The Animated Series
|
|
|
Comics/Graphic Novels
| Title
|
Catalogued
|
Notes
|
| Halo Graphic Novel
|
✅
|
|
| Halo: Uprising
|
✅
|
|
| Halo 3: The Cradle of Life
|
|
|
| Halo Wars: Genesis
|
✅
|
|
| Halo: Helljumper
|
✅
|
|
| Halo: Blood Line
|
✅
|
|
| Halo: Fall of Reach
|
✅
|
"Boot Camp", "Covenant", "Invasion"
|
| Halo: Initiation
|
✅
|
|
| Halo: Escalation
|
✅
|
|
| Halo: Tales from Slipspace
|
|
|
| Halo: Rise of Atriox
|
|
|
| Halo: Collateral Damage
|
|
|
| Halo: Lone Wolf
|
|
|
Live-Action Trailers
| Title
|
Catalogued
|
Notes
|
| Starry Night
|
✅
|
|
| Halo: Landfall
|
|
|
| Believe
|
|
|
| The Life
|
|
|
| Birth of a Spartan
|
|
|
| Remember Reach
|
✅
|
|
| The Commissioning
|
|
|
| Scanned
|
|
|
| Hunt the Truth
|
|
|
| Know Your Enemy
|
|
|
| Step Inside
|
|
|
| Forever We Fight
|
|
|
| Carry On
|
|
|
| UNSC Archives
|
|
|
Reference Books
| Title
|
Catalogued
|
Notes
|
| Halo Encyclopedia (2009)
|
|
|
| Halo: The Essential Visual Guide
|
✅
|
|
| Halo 4: The Essential Visual Guide
|
✅
|
|
| Halo Mythos
|
|
|
| Halo Warfleet
|
|
|
| Halo: Official Spartan Field Manual
|
|
|
| Halo Encyclopedia (2022)
|
|
|
| The Official Halo Cookbook
|
|
|
ARGs
| Title
|
Catalogued
|
Notes
|
| i love bees
|
|
|
| Iris
|
|
|
| Believe
|
|
|
| Section 3
|
|
|
| Hunt the Truth
|
✅
|
|
| Halo Infinite: Memory Agent
|
|
|
Supplementary Material
| Title
|
Catalogued
|
Notes
|
| Conversations from the Universe
|
✅
|
|
| Bestarium
|
✅
|
|
| Halsey's Journal
|
✅
|
|