EVERY SINGLE movie/game/ tv show REFERENCE
and POP CULTURE NOD confirmed:
Video Games
Joust : The knight on the ostrich is seen in the crowd of Oasis civilians during the final battle. In Aech's basement there is an Arcade cabinet of Joust.
Space Invaders: A graffiti of multiple invaders are on a brick wall in Ohio. James Halliday wears a Space Invaders t-shirt. On Wade's OASIS visor there is a sticker of the logo from Space Invaders.
Centipede: A scorpion can be seen taking out the knight on the ostrich and carrying its rider. A centipede Arcade cabinet can be seen in Aech's basement.
Street Fighter : Ryu is seen on walking the Oasis racetrack. Blanka is seen in The Distracted Globe. Both Chun-Li and Sagat are seen in the crowd of Oasis civilians during the final battle. Street Fighter characters are seen as stickers on Samantha's Oasis visor.
Danganronpa : Nagito Komaeda is seen during the Final Battle with Hajime Hinata.
Battletoads : Zitz, Rash, and Pimple are seen in the crowd of Oasis civilians during the final battle.
Duke Nukem : Duke Nukem is one of the Oasis civilians taken out by Aech during the PVP fight.
Tomb Raider : Lara Croft is seen in The Distracted Globe and later during the final battle.
Battleborn : El Dragón, Toby, and Ambra are seen in the crowd of Oasis civilians during the final battle. Attikus, Benedict, and Miko are seen walking around the Oasis.
Mass Effect : The male and female versions of Commander Shepard are seen at The Distracted Globe and later during the final battle.
Overwatch: Tracer is seen during the final battle in the Oasis and can also be seen briefly in the Oasis zooming into a portal. Mercy is also seen during the final battle. In the Oasis Mall an Overwatch stall can be seen. Doomfist and Soldier 76 are seen walking around in the Oasis. Widowmaker, Mei, Hanzo and Sombra are seen destroying an IOI spider.
BloodRayne: Rayne can briefly be seen to the left next to Lara Croft during the final battle in the Oasis.
Angry Birds: Red and Bomb are seen flying into battle in the Oasis. The Iron Giant uses the slingshot to launch Parzival during the final battle.
Mortal Kombat : Raiden, Cassie Cage, Kitana, and Scorpion are seen in the crowd of Oasis civilians during the final battle. Sub-Zero and Johnny Cage are seen walking on the Oasis racetrack. Liu Kang can be seen being killed by Aech during the PVP fight. A Mortal Kombat sticker can be seen on Akihide’s shirt.
Halo : Master Chief, a group of Spartans, and an Elite are seen in the final battle. When Aech is in the PVP zone, he uses a Halo Aussalt Rifile. During the final battle, Parzival is seen summoning a SPNKR Rocket Launcher from Halo 1-3. In the Oasis Mall a Halo stall can be seen.
Yeah Yeah Beepiss I: The game is referenced several times by Art3mis. The game is also listed on one of the screens as a competitor in the race scene.
StarCraft : A Protoss and Zealot are briefly seen walking in the Oasis, behind Hello Kitty and her friends. Jim Raynor is also spotted during the PVP fight. A Sectoid appears in the Oasis behind Tracer waiting in line.
Devil May Cry: Danté is seen during the final battle amongst the Oasis civilians. Wade's avatar Parzival bears a resemblance to Dante.
Captain Commando: The titular character can be seen during the final battle.
Legend of Zelda: Link, Zelda, and Ganondorf are seen during the final battle.
Metroid: Samus Aran is seen in the crowd of Oasis civilians during the final battle as well as in The Distracted Globe, dancing next to Art3mis.
BioShock: A Big Daddy is seen during the final battle.
Final Fantasy VII : Cloud Strife is seen during the final battle.
Bayonetta : The titular character is seen during the final battle.
Mega Man : The titular character is briefly seen during the final battle.
Super Mario Bros: Mario riding Yoshi and Bowser are seen during the final battle. Waluigi can also be seen at The Distracted Globe.
Mario Kart: Mario riding Yoshi and Bowser are seen during the final battle. Luigi is seen riding his kart at the Oasis racetrack. Aech also mentions Mario Kart while talking to Wade.
Minecraft: Herobrine and a Creeper are briefly seen during the final battle. A Minecraft Stall can be Seen in the Oasis Mall
Sonic the Hedgehog: The titular character is seen during the final battle in the Oasis and can also briefly be seen waiting in line for access to a portal in the Oasis. A Sonic stall in the Oasis Mall can be seen. Knuckles the Echidna is seen at The Distracted Globe.
Fire Emblem: Marth and Ike are seen in The Distracted Globe and during the final battle. Corrin can be seen entering a PVP portal in the Oasis.
Skylanders: Gill Grunt, Drobot, Magna Charge, Hood Sickle and Torch are seen during the final battle in the Oasis. Blaster-Tron can be seen entering a PVP portal in the Oasis.
Kirby: The titular character and King Dedede are seen during the final battle.
Pokémon: Parzival is seen throwing a Poké Ball at the Batmobile during the race. A Poké Ball also appears very briefly when being thrown up in the air when Wade is introducing the Oasis. Rayquaza can also be seen in the final battle.
Half-Life: Gordon Freeman is seen during the final battle.
Warcraft III: The famous scene between Uther Lightbringer and Arthas Menethil is reenacted as a Stinger after the movie's credits.
God of War: Kratos is seen during the final battle.
Tomb of Horrors: A large sticker of the logo is on the back of Aech's hideout van.
Uncharted: Nathan Drake is seen during the final battle.
Resident Evil: Chris Redfield and Jill Valentine are seen during the final battle.
Donkey Kong: The titular character can be seen on a poster in a girl's room.
Star Fox: Fox McCloud is seen during the final battle.
Darkstalkers: Jedah Dohma and Morrigan are seen during the final battle.
Metal Gear Solid: Solid Snake is seen in The Distracted Globe.
Metal Gear Rising: A nanomachine powered Senator Armstrong can be seen during the final battle.
F-Zero: Captain Falcon is seen getting in the Blue Falcon on the Oasis racetrack.
Pikmin: Olimar is seen in The Distracted Globe.
Kid Icarus: Pit and Palutena are seen during the final battle.
Earthbound: Ness is seen fighting a Sixer during the final battle.
Punch-Out: Little Mac is seen during the final battle.
Xenoblade Chronicles: Shulk is seen during the final battle.
Five Nights at Freddy's: In the PVP zone, there is a silhouette of Nightmare Freddy.
Shovel Knight: The titular character is seen in the Oasis.
Monkey Ball: Ai Ai is seen during the final battle.
NiGHTS: The titular character is seen during the final battle.
Splatoon: Parzival is seen using Inkling-based weapons during the final battle.
Portal: GlaDos is mentioned by Aech during the final battle. Wheatley can be seen flying around in the Oasis.
Ghosts 'n Goblins: Firebrand can be seen flying around in the Oasis.
Final Fight: Mike Haggar can be seen during the final battle.
Strider: Strider Hiryu can be seen during the final battle.
Dead Rising: Frank West can be seen walking around in the Oasis.
Soul Calibur: Ivy is seen during the final battle.
Bionic Commando: Spencer can be seen in The Distracted Globe.
Dino Crisis: Regina can be seen during the final battle.
Okami: Amaterasu can be seen walking in the PVP portal.
Fatal Fury: Mai Shiranui is seen during the final battle.
Crazy Taxi: B.D. Joe is briefly seen on the Oasis Racetrack getting into his Taxi.
Dark Souls: A Mushroom Parent and a Mushroom Child are briefly seen entering the Oasis.
Gears of War: Myrrah is seen during the final battle.
Borderlands: A Borderlands shop is seen in the Oasis Mall.
Left 4 Dead: Hunter, Boomer, and Tank are seen during the final battle.
Dead Space: A Necromorph is seen during the final battle.
Fallout: Liberty Prime appears during the final battle.
LittleBigPlanet: Sackboy appears during the final battle.
Undertale: Sans can be seen during the final battle in the Oasis.
The Literature Club: Emi and Minobu can be seen in the Oasis Mall.
Grand Theft Auto: Big Smoke can be seen in the nightclub eating a hamburger.
Movies
The Iron Giant: The Iron Giant is seen during the final battle in the Oasis.
Back to the Future: Parzival is seen driving a DeLorean time machine. In Aech's Basement there is a replica of the Hoverboard from Back to the Future: Part 2. When Art3mis is about to exit Aech's garage Art3mis refers Parzival to Marty McFly and does the helmet pose before exiting.
Akira: Art3mis drives Shotaro Kaneda's motorcycle.
Buckaroo Banzai: Parzival dresses up in Buckaroo's suit at the Distracted Globe.
Chappie: The titular character can be seen during the final battle.
King Kong: King Kong is seen as one of the stage hazards in the Oasis racetrack.
Mad Max: The Interceptor car is seen as one of the vehicles in the Oasis racetrack.
A Nightmare on Elm Street : Freddy Krueger is one of the Oasis civilians taken out by Aech in the PVP fight. A poster of the film can be seen in Wade's hideout van.
Conan the Barbarian : The titular character is briefly seen in The Distracted Globe.
Aliens: Ellen Ripley in her yellow mech suit and a Xenomorph are seen in the crowd of Oasis civilians during the final battle.
Batman (1989 film): The Batman logo can be seen as a sticker on Wade's Oasis visor. The Batmobile featured in the film is in Aech's garage. Parzival at one point climbs Mount Everest with Batman. A Batarang can be seen spinning around in a weapon selection room. A Mini-Batman sticker can be seen on Akihide's Oasis visor.
Christine: The titular car can be seen amongst other famous vehicles in the Oasis racetrack.
Army of Darkness : The Deadites are seen in the Oasis battlefield.
Superman: Parzival dresses up as Clark Kent.
Marvel Cinematic Universe: Rocket Raccoon and Groot are seen in The Distracted Globe. The Winter Soldier is seen taking out a scorpion.
Child's Play: Chucky is amongst the Oasis civilians seen during the final battle.
Say Anything...: Parzival is seen holding the boombox from the film.
The Cat in the Hat: The titular Cat is seen in the final battle wielding a baseball bat.
Hellboy: The titular character can be briefly seen during the final battle.
Spawn: The titular character can be seen in The Distracted Globe.
The 7th Voyage of Sinbad: The Cyclops can be seen during the final battle.
Jurassic Park/Jurassic World: Rexy the Tyrannosaurus Rex can be seen as one of the obstacle hazards in the Oasis racetrack, chasing Aech's monster truck. The Space Invaders Arcade cabinet in Aech's basement has a huge Jurassic Park logo sticker on to it.
Transformers film series: Optimus Prime, Bumblebee, and Nitro Zeus are seen amongst the crowd of Oasis civilians during the final battle. Megatron and Sentinel Prime are seen transforming into vehicle mode on the Oasis racetrack. Onslaught can be seen entering a PVP Portal in the Oasis.
Star Wars: Kylo Ren, General Grievous and Boba Fett are seen amongst the Oasis civilians before the final battle. Darth Vader is seen in The Distracted Globe. C-3PO and R2-D2 are seen walking on the Oasis racetrack, and are also seen briefly entering the Oasis alongside Jango Fett. X-Wings and AT-ATs are seen flying in the sky during the final battle. Han Solo can be seen being taken out by Aech. Darth Maul can be seen fighting Parzival during the final battle after Parzival ignites a blue lightsaber. A group of Stormtroopers can be seen working together with the Spartans during the final battle.
Classic Godzilla films: Mechagodzilla and Gigan are seen amongst the Oasis civilians during the final battle fighting the Iron Giant, Optimus Prime, and Gundam. King Ghidorah is seen in New York on the Oasis racetrack as one of the stage hazards. Rodan is seen during the final battle flying over Gundam. Battra and Titanosaurus can be seen being destroyed by a Group of Sixers.
Friday the 13th: Jason Voorhees is seen in the crowd of Oasis civilians during the final battle.
Gremlins: Multiple Gremlins are briefly seen in the crowd of Oasis civilians during the final battle. A poster of a Mogwai (most likely Gizmo) can be seen on the set of the film. A sticker of a Gremlin is seen in Wade's hideout van.
War of the Worlds: A Tripod is seen during the final battle.
Tron: A Blue Lightcycle is seen on the Oasis racetrack.
Cars: Mater is seen on the Oasis racetrack.
Avatar: A Na'vi is seen during the final battle.
Ghostbusters: The Stay Puft Marshmallow Man is seen during the final battle.
Pacific Rim: Gipsy Danger is seen during the final battle.
Big Hero 6: Baymax is seen during the final battle.
DC Extended Universe: Steppenwolf appears in The Distracted Globe. Enchantress is seen during the final battle.
MonsterVerse: Godzilla can be seen attacking Megalon in the distance on the Oasis racetrack.
The SpongeBob Movie series: The Patty Wagon is seen as one of the vehicles in the Oasis racetrack. Plankton appears in the final battle as Plank-TON.
Indiana Jones: The titular character is seen during the final battle. A replica of the golden idol from Raiders of the Lost Ark on a shelf in Aech's basement.
Gamera: The titular character is seen during the final battle.
The Shining: There is a Flicksync based on the movie that acts as a quest.
The Neverending Story: Falkor can be seen in the Oasis.
National Lampoon's Vacation: The Griswold Family Truckster can briefly be seen in the Oasis race when Art3mis skids past on her Akira bike.
Mothra: The titular character is briefly seen during the final battle.
Labyrinth: There is a poster of the film in Wade's hideout van.
Cloverfield: Kishin is briefly seen in New York battling King Kong as is also a stage hazard.
Teenage Mutant Ninja Turtles (2010s films): Leonardo and Raphael are seen in The Distracted Globe, and are later seen next to Parzival in the Oasis. Michelangelo can be seen in the final battle in the Oasis.
Wall-E: The titular character is seen next to Parzival in The Distracted Globe.
Real Steel: Atom is seen during the final battle.
G.I Joe: Snake Eyes and Duke are seen in The Distracted Globe.
The Wizard of Oz: The Wicked Witch is seen during the final battle.
Saturday Night Fever: There are multiple mini-dance floors based off the film in The Distracted Globe.
The Terminator films: The T-1000 and T-101 are seen during the final battle.
Catwoman: Catwoman is seen during the final battle.
Toy Story: Buzz Lightyear is seen during the final battle.
Sharknado: Fin Shepard is seen with his chainsaw during the final battle.
Pirates of the Caribbean: Jack Sparrow is seen during the final battle.
The Matrix: Neo is seen giving Wade a mushroom during the final battle. The opening logos for the film has purple patterns of the green text in the matrix. A Matrix poster can be seen among newspaper articles in Wade's hideout van.
The Incredibles: Mr. Incredible is seen in The Distracted Globe.
Jason and the Argonauts: The Living Skeletons can be seen during the final battle.
Predator: The titular character is seen next to Deadshot during the final battle.
Ice Age: Sid can briefly be seen entering the Oasis. Manny and Diego can be seen during the final battle. Captain Gutt and his crew are also seen in the PVP fight. Scrat can be seen in the Oasis Mall.
Jaws: A poster of a Great White Shark can be seen when the film crew are making a movie called Ready Player One.
Monsters Inc.: Mike Wazowski can be seen at The Distracted Globe.
Teenage Mutant Ninja Turtles II: The Secret of the Ooze: Tokka is seen during the final battle.
Robocop: The ED-209 can be seen in Aech's garage. The titular character is briefly seen entering the Oasis.
Spaceballs: Eagle 5 can be seen in Aech's garage.
Austin Powers: The upside-down T shaped rocket can be seen taking out the force field on the castle.
Pee-Wee's Big Adventure: Pee-Wee's bicycle can be seen in Aech's garage.
Elf: Buddy is seen hopping in the Oasis.
Space Jam: Charles Barkley is seen performing a Chaos Dunk during a PvP fight.
Rise of the Guardians: Jack Frost appears during the final battle.
How to Train Your Dragon: Hiccup and Toothless appear during the final battle.
2001: A Space Odyssey: The space pod can be seen in Aech's garage.
Ferris Bueller's Day Off: The red Ferrari can be seen in Aech's garage.
E.T. the Extra-Terrestrial: A poster of E.T. can be seen when the crew are making the film.
Zootopia: Nick Wilde is seen in The Distracted Globe. Judy Hopps and Chief Bogo appear during the Oasis Copper Key race.
Rock Dog: Bodi can be seen at The Distracted Globe.
The Goonies: The Goonies logo is printed on a James Halliday Newspaper Article. Sloth can be seen during the final battle.
Who Framed Roger Rabbit: Roger Rabbit is seen walking around the Oasis mall. Jessica Rabbit is seen at The Distracted Globe.
Beetlejuice: Beetlejuice appears during the final battle.
Over the Hedge: RJ is seen in the Oasis Mall. Hammy can also been seen during the final battle.
Last Action Hero: Jack Slater III is showing at the theatre.
Clash of the Titans: The Kraken appears during the final battle.
The Breakfast Club: John Bender can be seen walking in the Oasis next to Nightwing.
Wreck-It Ralph: Ralph can be seen during the final battle.
22 Jump Street: Jeff can be seen during the final battle.
The Dark Knight Rises: Bill Wilson is seen during the final battle.
Who Killed Captain Alex?: The Tiger Mafia can be seen in the final battle.
Comics/Literature
DC Comics: A Wonder Woman sticker is seen on Art3mis's Akira bike. Deathstroke, Doctor Fate, Poison Ivy, Killer Frost, Wonder Woman, Joker, and Harley Quinn are seen in The Distracted Globe. Batman, Deadshot, Wonder Woman, Aquaman, Black Manta and Flash are seen in the crowd of Oasis civilians during the final battle. Superman and Robin are seen taking out a Sixer. The Jaime Reyes version of Blue Beetle is shown walking next to Parzival in the Oasis. A random person in Ohio is wearing a Flash t-shirt. Green Lantern can be seen being taken out by Aech in the PVP fight. Hawkman can be seen multiple times in the Oasis and later during the final battle swooping over Wade's DeLorean. Wade mentions Lex Luthor to Art3mis. Nightwing is seen walking around the Oasis after Tracer enters a PVP portal. A Wonder Woman logo badge is on Helen's jacket.
Marvel Comics: Peter Parker and Bruce Banner are mentioned by Parzival. Deadpool, Iron Man, Hulk, Spider-Man, Loki and Thanos are seen in the crowd of Oasis civilians during the final battle. Black Widow and Hawkeye are seen in The Distracted Globe. Scarlet Witch, Captain America, Wolverine and Doctor Doom are seen chasing a Sixer. The Infinity Gauntlet is seen in Aech's garage. Magneto and Ultron can be seen entering a portal in the Oasis. The Wasp can be seen flying around in the Oasis.
The Lord of the Rings: Gandalf is seen in The Distracted Globe. A cave troll can be during the final battle in the Oasis. Aech uses an Orc as his selected Oasis avatar.
Harry Potter: The titular character is seen during the final battle.
Hägar the Horrible: The titular character is briefly seen in The Distracted Globe.
The Maze Runner: A Griever is seen during the final battle. Thomas and Sonya are seen in The Distracted Globe and are also seen confronting Parzival during the Copper Key Race.
The Black Order: Proxima Midnight and Corvus Glaive are seen during the final battle.
Lady Death: The titular character is seen during the final battle.
The Hunger Games: Katniss Everdeen is seen during the final battle.
Garfield: A Garfield sticker is seen inside Wade's hideout van.
Scott Pilgrim: Roxy Richter is seen during the final battle.
Alice in Wonderland: The Jabberwocky is seen during the final battle.
Watchmen: A Watchmen Smiley can be seen as a sticker in Wade's hideout van.
Spoiler: 
