KalebYoung

@cerial442: That is exactly what I'm wondering. What counts towards the 250?

Does anyone know what issues count toward the #250? I figure Vol. 1-3 are part of it, but that only totals ups to 186 (including #0's, #.1's, and Annuals). Cable and Deadpool is 50, but then there are 14 issues left until 250. What counts?

@ghostpirate

"...yet Xenomorphs didn't exist until the events of Prometheus film which takes places in the distant future."

Not true. In Prometheus when the group first enters the antechamber that has the giant Engineer's head there are murals on the wall of an Alien Queen and other Xenomorph-like imagery. Which means that they've probably been around a while. LV-223 looks as if it has been abandoned for a long time, so it's possible that the Aliens existed long before Prometheus. I'm still convinced that the AVP movies exist within the same chronology as the other films. The fact that they have a Fox representative to keep things in line with the movies convinces me further that AVP and Fire and Stone are canon.

@kingwillie: Thank you! I like to think of myself as a Spawn expert. I've been trying really hard to get this list around the internet, posting in forums and stuff. I was so frustrated reading the whole thing out of order, I didn't want anyone else to get a messed up story like I did. Spawn's whole run is such a great story. I really think it should be read this way.

This is a complete reading order I've put together and have been updating it as time passes. It has taken a long time because I had to read every single issue of Spawn and all the related titles. I did my very very best putting only the most story essential titles in. This is NOT a chronological order of the series. This is an order that presents the characters, themes, and story in the most coherent fashion. Many of the issues that chronologically come first would spoil some of the biggest secrets in the series, plus for new readers many of the terminology and themes would not make sense without the proper introduction through the main series. I've also added notes to clarify to those familiar to these titles on why I placed them the way I did.

I have read ALL THESE ISSUES and have concluded this list is the most complete order on the internet as of now. I looked for other reading orders and couldn't find any coherent ones. Many of them had several issues out of order or introduced things I hadn't read about in the main book so I didn't understand the reference. It frustrates me when I read something out of order and spoil all of the previous surprises that would've been fun to read. So here I give you my reading order for one of the greatest super heroes of all time, SPAWN!

Spawn #001, Questions, Part 1
Spawn #002, Questions, Part 2
Spawn #003, Questions, Part 3
Spawn #004, Questions, Part 4
Spawn #005, Justice
Spawn #006, Payback, Part 1
Spawn #007, Payback, Part 2
Curse of the Spawn #23, Overt-Resurrection
Curse of the Spawn #24, Overt-Hell
Spawn #008, In Heaven
Spawn #009, Angela
Spawn #010, Crossing Over
Spawn #011, Home
Spawn #012, Flashback, Part 1
Spawn #013, Flashback, Part 2
Spawn #014, Myths, Part 1
Spawn #015, Myths, Part 2
Spawn #016, Reflections, Part 1
Spawn #017, Reflections, Part 2
Spawn #018, Reflections, Part 3
Spawn #019, Showtime, Part 1
Spawn #020, Showtime, Part 2
Spawn/Batman (Image) (A.K.A. The Red Scare)
Spawn #021, The Hunt, Part 1
Spawn #022, The Hunt, Part 2
Spawn #023, The Hunt, Part 3
Spawn #024, The Hunt, Part 4
Violator #1, The World, Part 1 (note: happens the same time and 'The Hunt' arc)
Violator #2, The World, Part 2 (note: happens the same time and 'The Hunt' arc)
Violator #3, The World, Part 3 (note: happens the same time and 'The Hunt' arc)
Spawn, Fan Edition #1, The Sword of Hell, Blood of the Innocent
Spawn, Fan Edition #2, Hell's Bargain
Spawn, Fan Edition #3, No Mercy Upon the Wicked
Spawn #025, Tremors
Spawn #026, The Dark
Youngblood #7, #8, and #10: The Death of Chapel (note: this is arc leads directly into Spawn #27)
Spawn #027, Cursed
Spawn #028, Protector
Angela #1
Angela #2
Angela #3
Spawn #029, Father
Spawn #030, The Clan
Spawn #031, The Homecoming
Spawn #032, Appearances (Blood Feud: Preludes and Nocturnes) (note: included a prelude to Blood Feud)
Spawn: Blood Feud #1
Spawn: Blood Feud #2
Spawn: Blood Feud #3
Spawn: Blood Feud #4
Spawn #033, Shadows
Spawn #034, Ripples
Spawn #035, Set Up, Part 1
Spawn #036, Set Up, Part 2
Spawn #037, The Freak
Spawn #038, Mindgames
Spawn #039, Noel
Medieval Spawn/Witchblade #1 (note: this series belongs more in the Witchblade series, IMO)
Medieval Spawn/Witchblade #2 (note: this series belongs more in the Witchblade series, IMO)
Medieval Spawn/Witchblade #3 (note: this series belongs more in the Witchblade series, IMO)
Spawn/WildC.A.T.s #1, Devil Day, Part 1
Spawn/WildC.A.T.s #2, Devil Day, Part 2
Spawn/WildC.A.T.s #3, Devil Day, Part 3
Spawn/WildC.A.T.s #4, Devil Day, Part 4
Spawn #040, Fugitives, Part 1
Spawn #041, Fugitives, Part 2
Spawn #042, Fanboy
Spawn #043, Evil
Spawn #044, Avenger
Spawn #045, Warriors
Spawn #046, Revenge
Spawn #047, Twisted
Spawn #048, The System
Spawn #049, Helter Skelter
Spawn #050, Choices
Spawn #051, Freefall
Spawn #052, Messiah
Spawn #053, The Reckoning
Spawn #054, Reconciliation
Spawn #055, Sabotage
Spawn, The Impaler #1 (note: Contradicts established facts)
Spawn, The Impaler #2 (note: Contradicts established facts)
Spawn, The Impaler #3 (note: Refers to Al, but it contradicts established facts)
Spawn #056, Kahn
Spawn #057, The Beast
Spawn #058, Orphans
Spawn #059, Vanished
Spawn #060, Dwarfed
Spawn #061, Sanctuary
Cy-Gor #1, Fire in Mind, Part 1 (note: I only recommend reading this series if you like this character)
Cy-Gor #2, Fire in Mind, Part 2
Cy-Gor #3, Needles and Pins
Cy-Gor #4, Exquisite Corpse
Cy-Gor #5, Then One Foggy Christmas Eve
Cy-Gor #6, Terra Plane
Shattered Image #1-4 (note: this mini-series crossover is NOT story essential. Entirely ignorable.)
Mars Attacks Image #1-4 (note: this mini-series crossover is NOT story essential. Entirely ignorable.)
Curse of the Spawn #05, Suture
Curse of the Spawn #06, Blood and Rain
Curse of the Spawn #07, Tombs
Curse of the Spawn #08, Carnival of Souls
Curse of the Spawn #09, Limbo
Curse of the Spawn #10, A Fall of Doves
Spawn #062, Return
Curse of the Spawn #11, Cataclysm
Spawn #063, Identity
Spawn #064, Checkmate
Spawn #065, The Past
Spawn #066, Demons
Curse of the Spawn #12, Codename Priest
Curse of the Spawn #13, Heart of Darkness
Curse of the Spawn #14, Apocalypse When
Curse of the Spawn #15, Sympathy for an Angel, Part 1
Curse of the Spawn #16, Sympathy for an Angel, Part 2
Curse of the Spawn #17, Twist of Fate
Curse of the Spawn #18, Gunshot
Curse of the Spawn #19, Curse the Curse
Curse of the Spawn #01, Dark Future
Curse of the Spawn #02, Blood Lust
Curse of the Spawn #03, Corpse Candles
Curse of the Spawn #04, Damnation War
Spawn, Blood & Salvation
Altered Image #1-3 (note: this mini-series crossover is NOT story essential. Entirely ignorable.)
Spawn #067, Homeland
Spawn #068, Intersection
Spawn #069, Freaky
Spawn #070, Darkness
Spawn #071, Apparitions
Spawn #072, Bloodless
Spawn #073, The Heap
Spawn #074, The Void
Spawn #075, Sacred Ground
Spawn #076, Farewell Dance
Spawn #077, Relics
Spawn #078, Bloodstains
Spawn #079, Exterminator
Spawn #080, The Cleansing
Spawn #081, The Devil Inside, Part 1
Spawn #082, The Devil Inside, Part 2
Spawn #083, The Conqueror
Spawn #084, The Waiting
Spawn #085, Endgame
Spawn #086, Abdication
Spawn #087, Folklore
Curse of the Spawn #22, Deadland
Curse of the Spawn #25, Heart of Hell
Curse of the Spawn #26, Brother's Keeper
Curse of the Spawn #27, Ghosts
Curse of the Spawn #28, Bleed
Curse of the Spawn #29, Last Rites
Sam and Twitch #01, Udaku, Part 1
Sam and Twitch #02, Udaku, Part 2
Sam and Twitch #03, Udaku, Part 3
Sam and Twitch #04, Udaku, Part 4
Sam and Twitch #05, Udaku, Part 5
Sam and Twitch #06, Udaku, Part 6
Sam and Twitch #07, Udaku, Part 7
Sam and Twitch #08, Udaku, Part 8
Spawn, The Undead #1, A Face in the Crowd
Spawn, The Undead #2, The Door to Nowhere
Spawn, The Undead #3, My Soul to Keep
Spawn, The Undead #4, Song Sung Bloo
Spawn, The Undead #5, The Wind That Shakes the Barley, Part 1
Spawn, The Undead #6, The Wind That Shakes the Barley, Part 2
Spawn, The Undead #7, Up the Down Stairs
Spawn, The Undead #8, A Day in the Life
Spawn, The Undead #9, Waiting for Sparky
Spawn, Blood & Shadows
Curse of the Spawn #20, Dark Myth
Curse of the Spawn #21, Chaos Cometh
Spawn, The Dark Ages #01, Devil's Knight
Spawn, The Dark Ages #02, Forsaken
Spawn, The Dark Ages #03, Onward
Spawn, The Dark Ages #04, Death and Glory
Spawn, The Dark Ages #05, Crimson Shadows
Spawn, The Dark Ages #06, Benediction
Spawn, The Dark Ages #07, Providence
Spawn, The Dark Ages #08, Acts of Contrition
Spawn #088, Seasons of Change
Spawn #089, The Devil You Know
Spawn #090, Three Uses of the Knife
Spawn #091, Black Cat Bones, Part 1
Spawn #092, Black Cat Bones, Part 2
Sam and Twitch #09, One Really Bad Day
Sam and Twitch #10, Witchcraft, Part 1
Sam and Twitch #11, Witchcraft, Part 2
Sam and Twitch #12, Witchcraft, Part 3
Sam and Twitch #13, Witchcraft, Part 4
Spawn #093, The Devil's Banquet
Spawn #094, The Children's Hour
Spawn #095, Cracks in the Foundation
Spawn #096, Rules of Engagement
Spawn #097, Heaven's Folly
Spawn #098, The Trouble with Angels
Spawn #099, The Edge of Darkness
Spawn #100, Milestone
Spawn #101, Aftermath
Sam and Twitch #14, Dumb Laws and Eggs
Sam and Twitch #15, Bounty Hunter Wars, Part 1
Sam and Twitch #16, Bounty Hunter Wars, Part 2
Sam and Twitch #17, Bounty Hunter Wars, Part 3
Sam and Twitch #18, Bounty Hunter Wars, Part 4
Sam and Twitch #19, Bounty Hunter Wars, Part 5
Spawn, The Dark Ages #09, The Child's Crusade, Prologue, A Merry Round of Cheer
Spawn, The Dark Ages #10, The Child's Crusade, Part 1, A Questing Tale
Spawn, The Dark Ages #11, The Child's Crusade, Part 2, The Ghost on the Hill
Spawn, The Dark Ages #12, The Child's Crusade, Part 3, The Faithful
Spawn, The Dark Ages #13, The Child's Crusade, Part 4, Sacrifices
Spawn, The Dark Ages #14, The Child's Crusade, Part 5
Spawn, Simony
Spawn #102, Cautionary Tales, Part 1, The Speed of Night
Spawn #103, Cautionary Tales, Part 2, Remains
Spawn #104, Cautionary Tales, Part 3, A Town Called Malice
Spawn #105, Retribution Overdrive, Part 1
Spawn #106, Retribution Overdrive, Part 2
Sam and Twitch #20, The John Doe Affair, Part 1
Sam and Twitch #21, The John Doe Affair, Part 2
Sam and Twitch #22, The John Doe Affair, Part 3
Sam and Twitch #23, The John Doe Affair, Part 4
Sam and Twitch #24, The John Doe Affair, Part 5
Sam and Twitch #25, The John Doe Affair, Part 6
Sam and Twitch #26, The John Doe Affair, Part 7
Hellspawn #01, The Clown, Part 1
Hellspawn #02, The Clown, Part 2
Hellspawn #03, Hate Me
Hellspawn #04, Hate You
Hellspawn #05, Selling Fear
Hellspawn #06, The Big Leagues
Hellspawn #07, Shed
Hellspawn #08, The Suicide Gate
Hellspawn #09, Chains
Hellspawn #10, Clash
Hellspawn #11, Conflict of Interest
Hellspawn #12, Call Her Hel
Hellspawn #13, Hellworld, Part 1
Hellspawn #14, Hellworld, Part 2
Hellspawn #15, Hellworld, Part 3
Hellspawn #16, Hellworld, Part 4 (note: the ending contradicts main series, but is still considered canon)
Spawn, The Dark Ages #15, Dark Days Coming
Spawn, The Dark Ages #16, Heart of the Hellspawn
Spawn, The Dark Ages #17, The Circle and the Worm
Spawn, The Dark Ages #18, Crucified
Spawn, The Dark Ages #19, Like Any Other Man
Spawn, The Dark Ages #20, Voices in the Dark
Spawn, The Dark Ages #21, Sins of the Hellspawn
Spawn, The Dark Ages #22, The Seeding
Spawn, The Dark Ages #23, The Beast
Spawn, The Dark Ages #24, Bleed Pagan Bleed
Spawn, The Dark Ages #25, Plague of Man
Spawn, The Dark Ages #26, Lesion
Spawn, The Dark Ages #27, Bubonic Nights
Spawn, The Dark Ages #28, The End
Spawn #107, The Kingdom, Part 1
Spawn #108, The Kingdom, Part 2
Spawn #109, The Kingdom, Part 3
Spawn #110, The Kingdom, Part 4
Spawn #111, The Kingdom, Part 5
Spawn #112, The Kingdom, Part 6
Spawn #113, The Kingdom, Part 7
Spawn #114, The Bridge, Part 1
Spawn #115, The Bridge, Part 2
Spawn #116, Consequences
Spawn #117, A Season in Hell, Part 1
Spawn #118, A Season in Hell, Part 2
Spawn #119, A Season in Hell, Part 3
Spawn #120, A Season in Hell, Part 4
Spawn #121, Salvation Road, Part 1
Spawn #122, Salvation Road, Part 2
Spawn #123, Salvation Road, Part 3
Spawn #124, Salvation Road, Part 4
Spawn #125, Wake Up Dreaming, Part 1
Spawn #126, Wake Up Dreaming, Part 2
Spawn #127, Wake Up Dreaming, Part 3
Spawn #128, Wake Up Dreaming, Part 4
Spawn #129, Wake Up Dreaming, Part 5
Spawn #130, Seven and a Half Ghosts, Part 1
Spawn #131, Seven and a Half Ghosts, Part 2
Spawn #132, Pratfall
Spawn, Architects of Fear (note: this is the best place that I could fit this one-shot into)
Spawn #133, The Gentleman Caller
Spawn #134, A Thousand Clowns, Part 1
Spawn #135, A Thousand Clowns, Part 2
Spawn #136, A Thousand Clowns, Part 3
Spawn #137, A Thousand Clowns, Part 4
Spawn #138, A Thousand Clowns, Part 5
Spawn #139, Hellbound, Part 1
Spawn #140, Hellbound, Part 2
Spawn #141, Hellbound, Part 3
Spawn #142, Devil To Pay, Part 1
Spawn #143, Devil To Pay, Part 2
Spawn #144, Devil To Pay, Part 3
Case Files, Sam and Twitch #01, Have You Seen Me, Part 1
Case Files, Sam and Twitch #02, Have You Seen Me, Part 2
Case Files, Sam and Twitch #03, Have You Seen Me, Part 3
Case Files, Sam and Twitch #04, Have You Seen Me, Part 4
Case Files, Sam and Twitch #05, Have You Seen Me, Part 5
Case Files, Sam and Twitch #06, Have You Seen Me, Part 6
Case Files, Sam and Twitch #07, Skeletons, Part 1
Case Files, Sam and Twitch #08, Skeletons, Part 2
Case Files, Sam and Twitch #09, Skeletons, Part 3
Case Files, Sam and Twitch #10, Skeletons, Part 4
Case Files, Sam and Twitch #11, Skeletons, Part 5
Case Files, Sam and Twitch #12, Skeletons, Part 6
Case Files, Sam and Twitch #13, Cops & Robbers
Case Files, Sam and Twitch #14, Ancient Chinese Secret Huh, Part 1
Case Files, Sam and Twitch #15, Ancient Chinese Secret Huh, Part 2
Case Files, Sam and Twitch #16, Ancient Chinese Secret Huh, Part 3
Case Files, Sam and Twitch #17, Ancient Chinese Secret Huh, Part 4
Case Files, Sam and Twitch #18, Ancient Chinese Secret Huh, Part 5
Case Files, Sam and Twitch #19, Ancient Chinese Secret Huh, Part 6
Case Files, Sam and Twitch #20, Fathers & Daughters, Part 1
Case Files, Sam and Twitch #21, Fathers & Daughters, Part 2
Case Files, Sam and Twitch #22, Fathers & Daughters, Part 3
Case Files, Sam and Twitch #23, Fathers & Daughters, Part 4
Case Files, Sam and Twitch #24, Fathers & Daughters, Part 5
Case Files, Sam and Twitch #25, Fathers & Daughters, Part 6
Spawn #145, Destination Anywhere, Part 1
Spawn #146, Destination Anywhere, Part 2
Spawn #147, Howl
Spawn #148, Random Patterns, Part 1
Spawn #149, Random Patterns, Part 2
Spawn #150, Thamuz, Part 1
Spawn #151, Thamuz, Part 2
Spawn #152, Thamuz, Part 3
Spawn #153, Thamuz, Part 4
Spawn #154, Armageddon, Part 1
Spawn #155, Armageddon, Part 2
Spawn #156, Armageddon, Part 3
Spawn #157, Armageddon, Part 4
Spawn #158, Armageddon, Part 5
Spawn #159, Armageddon, Part 6
Spawn #160, Armageddon, Part 7
Spawn #161, Armageddon, Part 8
Spawn #162, Armageddon, Part 9
Spawn #163, Armageddon, Part 10
Spawn #164, Home Coming
Spawn #165, Mandarin Spawn
Spawn #166, The Voice-Hearers, Part 1, Skin Deep
Spawn #167, The Voice-Hearers, Part 2, The Peanut Butter Lady
Spawn #168, The Voice-Hearers, Part 3, Laughter in the Dark
Spawn #169, Voodoo Child
Spawn #170, A Tale of Three Brothers, Part 1, Hellhouse
Spawn #171, A Tale of Three Brothers, Part 2, Remembrance
Spawn #172, A Tale of Three Brothers, Part 3, Past Sins
Spawn #173, A Tale of Three Brothers, Part 4, Secrets and Lies
Spawn #174, Gunslinger Spawn, Part 1
Spawn #175, Gunslinger Spawn, Part 2
Spawn #176, The Monster in the Bubble, Part 1
Spawn #177, The Monster in the Bubble, Part 2
Spawn #178, Dead Man Walking
Spawn #179, War Spawn
Spawn #180, (Untitled) (suggested title: Beginning of The End)
Spawn #181, The Best of Times
Spawn #182, Bad Blood
Spawn #183, Transformations
Spawn #184, The End
Spawn #185, Endgame, Part 1
Spawn #186, Endgame, Part 2
Spawn #187, Endgame, Part 3
Spawn #188, Endgame, Part 4
Spawn #189, Endgame, Part 5
Spawn #190, Endgame, Part 6
Spawn #191, Endgame, Part 7
Spawn #192, Endgame, Part 8
Spawn #193, Endgame, Part 9
Spawn #194, Endgame, Part 10
Spawn #195, Endgame, Part 11
Spawn #196, Endgame Conclusion
Image United #0-6 (canceled after #3) (note: this event is referenced in #200, but is retconned out.)
Sam and Twitch, The Writer #1
Sam and Twitch, The Writer #2
Sam and Twitch, The Writer #3
Sam and Twitch, The Writer #4
Haunt #1
Haunt #2
Haunt #3
Haunt #4
Haunt #5
Spawn #197, (Untitled) (suggested title: The Redeemer's Return)
Spawn #198, (Untitled) (suggested title: The Last Patient)
Spawn #199, (Untitled) (suggested title: Shadow from the Past)
Spawn #200, (Untitled) (suggested title: Alpha and Omega)
Haunt #6
Haunt #7
Haunt #8
Haunt #9
Haunt #10
Haunt #11
Haunt #12
Spawn #201, New Beginnings, Part 1
Spawn #202, New Beginnings, Part 2
Spawn #203, New Beginnings, Part 3
Spawn #204, New Beginnings, Part 4
Spawn #205, New Beginnings, Part 5
Spawn #206, New Beginnings, Part 6
Spawn #207, Q & A, Part 1
Spawn #208, Q & A, Part 2
Spawn #209, Q & A, Part 3
Spawn #210, Q & A, Part 4
Haunt #13
Haunt #14
Haunt #15
Haunt #16
Haunt #17
Haunt #18
Spawn #211, Violation of Trust, Part 1
Spawn #212, Violation of Trust, Part 2
Spawn #213, The Gathering Storm, Part 1
Spawn #214, The Gathering Storm, Part 2
Spawn #215, The Gathering Storm, Part 3
Spawn #216, The Gathering Storm, Part 4
Spawn #217, The Gathering Storm, Part 5
Spawn #218, The Gathering Storm Conclusion
Spawn #219, Eye of the Storm
Haunt #19, Headwires On Fire
Haunt #20, A Conspiracy
Haunt #21, The Glorious Orgy
Haunt #22, Backflash 1979
Haunt #23, Return Trip
Haunt #24, Kick-Ash!
Spawn #220, Origin of the Species, Part 1
Spawn #221, Origin of the Species, Part 2
Spawn #222, Origin of the Species, Part 3
Spawn #223, Origin of the Species, Part 4
Spawn #224, Origin of the Species, Part 5
Haunt #25, Insecticided
Haunt #26, Mind Worms
Haunt #27, Get Happy!
Haunt #28, While You Were Beaten!
Spawn #225, De-Programmed, Part 1
Spawn #226, De-Programmed, Part 2
Spawn #227, De-Programmed, Part 3
Spawn #228, Collateral Damage
Spawn #229, Celebrity Savior, Part 1
Spawn #230, Celebrity Savior, Part 2
Spawn #231, Celebrity Savior, Part 3
Spawn #232, Celebrity Savior, Part 4
Spawn #233, Celebrity Savior, Part 5
Spawn #234, Celebrity Savior, Part 6
Spawn #235, Bluddlines
Spawn #236, Consequences
Spawn #237, (Untitled) (my suggested title is: The Dead Zone, Part 1)
Spawn #238, (Untitled) (my suggested title is: The Dead Zone, Part 2)
Spawn #239, (Untitled) (my suggested title is: The Dead Zone, Part 3)
Spawn #240, (Untitled) (my suggested title is: The Dead Zone, Part 4)
Spawn #241, (Untitled) (my suggested title is: The Dead Zone, Part 5)
Spawn #242, (Untitled) (my suggested title is: The Dead Zone, Part 6)
Spawn #243, (Untitled) (note: I actually got my question printed and answered in the back of this one!!!)
Spawn #244, (Untitled)
Spawn #245, (Untitled)
Spawn #246, (Untitled)
Spawn #247, (Untitled)
Spawn #248, (Untitled)
Spawn #249, (Untitled)
Spawn #250, (Untitled)
Spawn: Resurrection
Spawn #251, (Untitled)
(Ongoing...)

SPIN-OFFS (and non-canon) (I suggest reading Godslayer between Spawn #165 and Spawn #166.)
Spawn, Godslayer
Spawn, Godslayer #1, The Winter King, Part 1
Spawn, Godslayer #2, The Winter King, Part 2
Spawn, Godslayer #3, The Winter King, Part 3
Spawn, Godslayer #4, The Winter King, Part 4
Spawn, Godslayer #5, Dromo's Tale
Spawn, Godslayer #6, Return to Endra-La, Part 1
Spawn, Godslayer #7, Return to Endra-La, Part 2
Spawn, Godslayer #8, Return to Endra-La, Part 3

Aria-Angela, Heavenly Creatures, Part 1
Aria-Angela, Heavenly Creatures, Part 2
Angela, Ocean of Evil, Vessel of the Doomed (not really canon, placed between #31 and #32)

Shadows of Spawn, Vol. 1
Shadows of Spawn, Vol. 2
Shadows of Spawn, Vol. 3

The Adventures of Spawn #1, Director's Cut
The Adventures of Spawn #2, The Awakening War Conclusion
The Adventures of Spawn online bonus content

Spawn, Bible (best read after Spawn #60)
Spawn, The Movie (based off the 1996 Spawn movie) (best read after #61)
Spawn, Book of the Dead (best read after Spawn #184)
Batman/Spawn: War Devil (DC) (fits more into Batman's series than Spawn's)
Spawn/Batman, Inner Demons (canceled, 3 images were released in 2006)

Spawn, Toys #1, Spawn
Spawn, Toys #2, Clown/Violator
Spawn, Toys #3, Overtkill
Spawn, Toys #4, Medieval Spawn
Spawn, Toys #5, Tremor
Spawn, Toys #6, Spawnmobile
Spawn, Toys #7, Monster Rig
Spawn, Toys #8, Spawn Ally

Spawn is also featured in many other Image comics in brief one panel cameos and as an acting guest appearance. None of them really effect the main Spawn story, with the exception of Youngblood #8 and #10, which bring the Chapel subplot to a close.