Here's the full list of double page spreads for megadoomer. Thanks to Kuroneko for pointing out those that I missed.
! First color spread (1)
Luffy punching the Sea King (1)
Gomu Gomu no whip (6)
Fire the Buggy ball! (14)
Color spread: Cart ride trio (28)
Usopp Pirate Crew disbanded (40)
Kreig‘s counter strike (47)
Mihawk‘s sudden attack (49)
Color spread: Don Kreig arc cast (52)
Color spread: woking in the field (61)
Gomu gomu no Gaval (66)
Color spread: Samurais (70)
Color spread: Go west, young Strawhats (79)
GOMU GOMU NO WINDMILL! (83)
Destruction of Arlong Park (93)
John Giant’s speech (96)
Lightning Bolt (99)
Cover spread: 100th chapter milestone (100)
Sea King parade (101)
Cover spread: it’s funky (107)
Cover spread: in the moonlight (111)
Luffy/Zoro vs. Mr. 5/Valentine (112)
I’ve already forgotten what caused this fight (116)
Cover spread: Dorry and Broggy (117)
Cover spread: stand up –- if you wanna fight (128)
Holy Wind Slice (129)
Cover spread: Mugiwara winter wonderland (133)
Kureha’s Castle (138)
Cover spread: on a perfect day (140)
Luffy punches Wapol (145)
Cover spread: Running, running, running (147)
Color spread: Mugiwara jungle (152)
Shut up and come with us!! (152)
Full moon (153)
Chopper’s teary-eyed goodbye (153)
The Guardian of Alabasta, Crocodile! (155)
Color spread: Bad Boyz (156)
Baroque ships (157)
Proof of friendship (157)
Flame Fist! (159)
Color spread: Baroque Works alumni (160)
Banchi (161)
MAKI! WHIP! SHOOT! (162)
Sandstorm in Yuba (163)
Yuba Oasis (163)
Color spread: Tribe leaders Luffy and Nami (175)
Anti-Manners Kick Course! (176)
Here comes the Duck Squad (181)
SORRY, TRY AGAIN (181)
Commence war (182)
Color spread: Boyz of war (186)
Sanji vs. Bon Clay spread 1 (189)
Sanji vs. Bon Clay spread 2 (189)
Crocodile takes over (189)
Nami defeats Doublefinger (193)
Zoro defeats Mr. One (195)
Return fire (198)
Luffy’s return (198)
Crocodile gets punched (199)
Color spread (201)
The Great Flying Bird saves the Country (208)
Gomu Gomu no Storm (209)
End of the war (211)
Color spread: sky-diving swine (213)
I really love this country (216)
Friendship salute! (216)
Falling ship (218)
Opening spread: Now, please relax (221)
“They were swallowed by that thing, right?” (221)
MONSTERS!!! (221)
Luffy defeats Bellamy (232)
The Five Elder Stars (233)
Donquixote Doflamingo and Bartholomew Bear arrive (233)
Whitebeard (234)
The Blackbeard Pirates (234)
Giant whirlpool (235)
Blast to the sky (236)
Sailing the clouds (237)
It’s Sky Island (239)
Relaxing on Angel Beach (239)
Opening spread: Usopp the magnificent artist (241)
Color spread: down in the swamp (246)
Shura impales Gan Forr (249)
CONCASSER! (250)
The missing half of Jaya spread 1 (251)
The missing half of Jaya spread 2 (251)
Dances with Wolves (253)
Color spread: No parking on the Battleground (254)
I am God (254)
Eneru’s plan (254)
Zoro defeats Braham (259)
Luffy vs. Wiper (260)
Chopper defeats Gedatsu (262)
The survivors of war, part 1 (267)
The survivors of war, part 2 (267)
Robin in the Golden City (268)
Color spread: Japanese tea party[?] (269)
The survivors of war, part 3 (269)
Zoro defeats Ohm (271)
Lightning?! (272)
Survivors of war, part 4 (273)
Cover spread: Riding high already (274)
The arc Maxim (277)
Luffy’s free (277)
Luffy and Eneru: staredown (278)
Eneru’s one and only natural enemy (279)
Maxim’s depature (280)
Gomu gomu no bazooka and riffle! (281)
The Maxim is coming (282)
Color spread: live a life of ease (284)
The thunderstorm has started (285)
Color spread: Ramen shop (287)
Shot of the bell (290)
Norland departs (291)
Norland’s execution (292)
Color spread: Basketball (293)
Witness the power of God (293)
The Advent of Thunder (294)
Eneru and the Golden Bell (295)
Farewell, Skypiea (295)
Going up the beanstalk spread 1 (296)
Going up the beanstalk spread 2 (297)
Is that someone’s dying words? (297)
Turn sunny now! (297)
Luffy vs. Eneru part 1 (298)
Luffy vs. Eneru part 2 (298)
Observers on Skypiea (298)
Ringing the bell (298)
“The golden city has always been here!” (298)
RING~~~~~!!!! (299)
Giant Luffy Shadow (299)
Do you think they heard it? (299)
Go, Maxim, to the Endless Land (300)
Skypiea party (300)
Back to Earth we fall (302)
Color spread: celebrating 300 chapters with the dancing rainbow wave (304)
Big empty island (304)
Introducing the Foxy Pirates (305)
The winner is Cutie Wagon (309)
The Monsters of the Foxy Pirates (309)
Color spread: three samurais (310)
Big-Pan fall down, go boom (312)
Color spread: Hanging the landry (317)
The winner is Luffy (317)
Ice Age (319)
Luffy receives Ice Time (321)
A train on the sea? (322)
Grand Line “Water Seven” (323)
The fighting shipwrights of Galley-La (323)
Yagara Bull water route (324)
Color spread: The Midnight Train in the sky (327)
Another shot of Water 7 (327)
Let’s cause trouble in that house (329)
Bustin’ in (330)
Luffy to Franky Family: we’re going to pulverize you (330)
Luffy and Usopp: the stare down (332)
Color spread: A tropical bizarre paradise (334)
The SUPAAAA pose (335)
The Chief Mechanics of Dock 1 (336)
Coup De Vent (338)
Stirring things up with a big explosion (342)
Behind the scene secret service Ciper Pol No. 9 (345)
WHERE’S ROBIN~~~~~?!!!! (346)
Luffy’s here (347)
Neko Neko no Mi Model Leopard (349)
Down goes Galley-La (349)
An ordinary citizen shouldn’t defy a large government (349)
Color spread: There’s an open road (352)
Grand Opening of the Puffing Tom (354)
Battle Franky Brigade (355)
Color Spread: Mugiwara Pirates Venture to Water Seven (357)
Aqua Laguna, spread #1 (363)
Aqua Laguna, spread#2 (363)
Aqua Laguna, spread#3 (363)
Color Spread: Versus the Giant Evil Sea Hippo (364)
Paulie plucks pickled pirates (364)
The Rocket Man (365)
Setting off for Enies Lobby (365)
Franky Family’s Private King Bulls/Setting off (366)
Chug-a-lug Rocket Man (366)
Out of the Aqua Laguna (367)
Color spread: Crash! We can Fight! (369)
Zoro’s Rashomon (371)
Zoro defeats T-Bone (371)
Sanji defeats Wanze (372)
Color Spread: Kimo Strawhat Men (373)
Franky defeats Nero (373)
Overshot of the Tower of Justice (375)
Fukurou, Jabura, & Kumadori (375)
The Gates of Justice (376)
Color Spread: Mugiwara Pirates versus Ciper Pol no. 9 (377)
The Front Gate Keepers of Enies Lobby, Oimo and Kaashii (377)
Luffy and the agents of justice (377)
Oimo and Kaashii vs. Franky Family, part 1 (378)
Oimo and Kaashii vs. Franky Family, part 2 (378)
Oimo and Kaashii vs. Franky Family, part 3 (378)
Oimo and Kaashii vs. Franky Family, part 4 (378)
Gomu Gomu no Storm against the Enies Lobby Mariners (378)
Color Spread: Summer Time (379)
CP9 reunited (379)
The sea train is flying! (380)
A train in your spine (380)
Luffy vs. Blueno, part 1 (382)
Color spread: The Winner takes it all (383)
Luffy vs. Blueno, part 2 (383)
How dare you deceive us?! (384)
Attack of the King Bulls (385)
Zoro and Sanji take over (386)
Color spread: Lance battle (387)
The home of Baskerville (387)
Luffy vs. Blueno, part 3: Jet Pistol (388)
Luffy vs. Blueno, part 4: Jet Bazooka (388)
Luffy finds Robin (389)
The beastly members of CP9 (389)
The giants hold the enemy off (390)
The 6 Strawhats to the Rescue (390)
Color spread: a cozy fire……… on the snow? (391)
Color spread: Jungle expedition (394)
Robin’s flashback: infiltrating the buster call (395)
Ships make good weapons for giants on the run (396)
Burning the flag (398)
The Strawhat cheer. The drawbridge is lowering! (399)
The Rocketman has infiltrated (399)
Color spread: Escape the giant mammoths, Cave Strawhats (401)
Jabura’s wolf form (401)
Krashing Kaku (401)
Kaku’s Amanedachi (402)
Franky versus Fukurou (404)
Color spread: Chopperman (405)
Franky defeats Fukurou (406)
Monster Point (407)
Monster Chopper defeats Kumadori (408)
Whereabouts of the Mugiwara Pirates and CP9ers (409)
Bad news broadcast (409)
Color spread: hot dog picnic (410)
Monster Chopper vs. Califa, part 1 (410)
Monster Chopper vs. Califa, part 2 (411)
Falling tub (411)
Nami defeats Califa (412)
Sanji the Hunter (413)
The gates are opening (414)
Color spread: the three gorillas (415)
Sanji defeats Jabura (415)
Zoro defeats Kaku (417)
Spandam is hit (419)
The Sogeking (419)
The Buster Call ships (420)
The Buster Call fires (421)
Gomu gomu no Gigantic Pistol (421)
Color spread: two-man team water speedsters (422)
Gomu gomu no Gigantic Axe (422)
Mermaid Express (423)
Strawhat Allies vs. the Buster Call ships (424)
The number of survivors is zero (425)
Luffy vs. Lucchi (425)
Color spread: dream clouds (426)
Captains and Commanders versus the Strawhats (426)
Luffy defeats Lucchi! (427)
MERRY! (428)
The gates are closing! (429)
Robin defeats Spandam (429)
This fight is our victory (429)
The funeral (430)
Color spread: Luffy, Robin, and Chopper: the great animal choir (431)
Water 7 Party (433)
The meeting of the Great Powers (434)
Splitting of the heavens (434)
New bounties (435)
The King of Beasts (436)
I’M SORRY (438)
Color spread: walk more slowly (439)
Going Sunny’s speedy get-away (439)
Blackbeard’s “darkness” (440)
Black Hole, spread 1 (441)
Black Hole, spread 2 (441)
Brooke accepts Luffy’s offer (442)
The land known only as Thriller Bark (443)
Creatures of the night (445)
ZOMBIES! (445)
Color spread: Vikings (446)
600,000,000 Berri Jackpot (448)
Color spread: Black coat trio (449)
Sleeping Shichibukai (449)
Welcome to the Wonder Garden (451)
The Zombie Generals march (452)
Spider Monkey (452)
Falling Bones breaks the bridge (453)
Color spread: Heavyweight champions, Franky vs. Luffy (454)
Brooke defeats Tararan (454)
The four of Thriller Bark (455)
Oz (456)
Color spread: ? (457)
