| 1971 - | • Construction of Worlds of Fun Begins. |
| 1973 - | • Worlds of Fun Opens on May 26th! |
| 1974 - | • The Forum Amphitheater in Americana Opens • The Red Baron bi-plane ride is added to Scandinavia • Worlds of Fun Hosts its One Millionth Guest |
| 1975 - | • Dan'l Coon, Sam Panda and Grrrtrude the Gorilla, the park's mascots for years, premier at the park. |
| 1976 - | • America's Bicentennial Anniversary • The Screamroller Added to Americana • Bicentennial Square Added to Americana |
| 1977 - | • Singapore Sling (Bamboozler) Added to The Orient • Wobble Wheel Added to Americana • Bounce-A-Roos Added to Europa • Nairobi Nigel's Pygmy Playhouse added to Africa • Half Pint's Peak Added to Scandinavia • Micro Moto Bahn added to Scandinavia • Floral Clock introduced in Africa |
| 1978 - | • The Aerodrome is Added to Americana • The Barnstormer Biplane Ride is added to Aerodrome • Red Baron moved to Aerodrome • Boat Tank (Tot's Yachts) added to Scandinavia • Game Street U.S.A added to Americana • The Safari is Removed |
| 1979 - | • Le Carousel is Added to Europa • The Zulu Added to Africa • Beetle Bumps Added to The Orient • The Wingding is Added to the Aerodrome • Funicular moved to Africa; renamed Silly Serpent • Sunken Fountain added to Americana |
| 1980 - | • Singapore Sling Moved to Americana; Renamed Whirligig • The Orient Express is Added to The Orient • Nairobi Nigel's Pygmy Playhouse is Removed • The Wingding is Removed |
| 1981 - | • The Incredi-Dome is Added to the Aerodrome • Casbah Games is Added to Africa |
| 1982 - | • Worlds of Fun Celebrates its 10th Anniversary! • Oceans of Fun, a 60-acre water park, opens on May 22nd! • River City is Added to Americana • River City Rampage (Fjord Fjarlene) is Added to River City • Pony Promenade Added to Americana • Viking Vheel, (Head over Wheels) added to Scandinavia • Country Junction, a 1000 seat amphitheater is added. |
| 1983 - | • Screamroller Converted to USA's 1st Stand-Up Coaster and renamed Extremeroller (EXT) • The Starbeam Music Machine opens in the Tivoli Theatre • The Barnstormer Biplane Ride is Removed • Typhoon and Frisbee Folf are added to Oceans of Fun |
| 1984 - | • Fury of the Nile Added to Africa • Extremeroller Converted Back into Sit-Down Coaster • Octopus Moved to the Aerodrome; Renamed Tail-Spinner • The Schussboomer is Removed |
| 1985 - | • "Stax of Wax" premiers in the Moulin Rouge Theatre • The Haunted Theatre Show premiers in Tivoli Music Hall |
| 1986 - | • Omegatron Added to Americana • Half Pint's Peak is Removed • The Aerodrome is Removed • Silly Serpent is Removed • Whirligig moved to The Orient; renamed Bamboozler |
| 1987 - | • Pandamonium! childrens' area opens • The Sky High/Sky Heis are Removed • Caribbean Cooler added to Oceans of Fun. |
| 1988 - | • Worlds of Fun Celebrates 20 Million Guests • Python Plunge is Added to Africa • The Screamroller is Removed • Tivoli Picnic Terraces Added to Scandinavia • Cyclone Sadies Saloon funhouse removed, and becomes an arcade in 1989 |
| 1989 - | • Timber Wolf wooden coaster is added to Americana |
| 1991 - | • Beat Street is Added to Americana, replacing River City • Timber Wolf is best wooden coaster in the World • Fjord Fjarlane Moved to Scandinavia • Crocodile Isle, a new area for children, is added to Oceans of Fun |
| 1992 - | • Worlds of Fun Celebrates its 20th Anniversary • Monsoon is Added • Coconut Cove is added to Oceans of Fun. • WOF and OOF are joined via Same Day Gateway |
| 1993 - | • Wacky Worm is Added to Pandamonium! • The Victrix Firing Range is Removed • Aruba Tuba added to Oceans of Fun • Wobble Wheel is Removed |
| 1994 - | • Sea Dragon is Added to Scandinavia |
| 1995 - | • Cedar Fair L.P. buys WOF & OOF from Hunt Midwest • Captain Kidds, an interactive play ship for children, is added to Oceans of Fun. • Cyclone Sam's is Added to Americana • The Cotton Blossom is Removed • Tram Rides are Discontinued • The Floral Clock is Removed • Marionette Show is Removed |
| 1996 - | • Detonator is Added to Americana • The RipCord is Added to Americana • Pandamonium! is Removed • "Fins & Flippers" Canceled • Octopus is removed |
| 1997 - | • Worlds of Fun Celebrates its 25th Anniversary • Bearenstain Bear Country is Added • Summer Spectacular Premiers in the Forum • Zambezi Zinger is Removed • The Incred-O-Dome is Removed • Americana Entrance is Closed |
| 1998 - | • The Largest Addition to Date, Mamba is Added to Africa • Octopus is reinstalled in Scandinavia • The Scrambler is Moved to Americana |
| 1999 - | • Grand Prix Raceway added to Americana • Coasters Midway Grill opens in Africa • "Stax of Trax" debuts in the Moulin Rouge • Forum Amphitheater re-named Heart of America Theater • The Plunge is closed at end of season • HalloWeekends debuts • Hurricane Falls opens at Oceans of Fun • Frisbee Folf is removed from Oceans of Fun • Steadman Plaza Removed • Orient Express de-rails on July 17, 1999. • Torii Gate is removed |
| 2000 - | • Boomerang is added to Africa • The Rock opens in Americana • Bearenstain Bear Country Removed • Either Oar Removed |
| 2001 - | • Camp Snoopy Added to Americana • Steadman Plaza Added • Camp Bus, Woodstock's AirMail and Snoopy Bounce added • Omegatron removed |
| 2002 - |
• Worlds of Fun celebrates it's 30th Anniversary • Thunder Hawk added • "Otta Sync", a traveling musical band, premiers at the park. |
| 2003 - |
• Paradise Falls opens at Oceans of Fun • The Orient Express is removed • The Aquatic Arena (formerly the Dolphin Pool) is removed • Carnival of Carnivorous Clowns and House on Boo Hill are added to Halloweekends |
| 2004 - |
• Spinning Dragons is added to the Orient. • Camp Gonna Gitcha, The Fright Zone and Lore of the Vampire are added to Halloweekends |
| 2005 - |
• Worlds of Fun Village opens as the park's first on-site lodging • Peanuts Playhouse added to Camp Snoopy • Rockin' Reeler Removed • Dominion of Doom and Slash are added to Halloweekends |
| 2006 - |
• The largest capital expenditure to date, Patriot is added to Americana • Asylum Island is added to Halloweekends |
| 2007 - |
• Bloodshed added to Halloween Haunt • Halloweekends is renamed Halloween Haunt |
| 2008 - |
• Worlds of Fun celebrates its 35th Anniversary • Master McCarthy's Doll Factory added to Halloween Haunt • Camp Gonna Gitcha moves locations to Fury of the Nile due to Prowler Construction • Outlaws Revenge added to Halloween Haunt • The Concert Series returns as part of the new Celebrate America Festival • The Oktoberfest Festival returns to the park. |
| 2009 - |
• Prowler is added to the African section. • Overlord's Awakening added to Halloween Haunt. |
| 2010 - |
• Snoopy's Hot Summer Lights premiers in the Europa and Africa Midways. • Cornstalkers replaces Camp Gonna Gitcha during Halloween Haunt. • Road Rally (Micro Moto Bahn) removed. • Head over Wheels (Viking Vheel) removed. • Bounce-A-Roo's removed. |
| 2011 - |
• Planet Snoopy replaces Camp Snoopy in Americana. • Woodstock's Whirlybirds, Lucy's Tugboat, Sally's Swing Set, Peanut's Road Rally are added. • Flying Ace Balloon Race, Peanuts 500 and Snoopy's Rocket Express are added. • The Grand Carousel is added to Scandinavia. • Festaus picnic pavilion is replaced. • Peanuts Ponies (Pony Promenade) removed. • London Terror replaces Dominion of Doom during Halloween Haunt • Half Pint Brawlers show premiers during Halloween Haunt |
| 2012 - |
• Zombie High added to Halloween Haunt. • Fastlane, a pay extra "skip the lines" option added. • Phileas Fogg (fictional character in Jules Verne's "Around the World in 80 Days") & Nellie Bly characters premier at the Park |
| 2013 - |
• Worlds of Fun celebrates its 40th anniversary. • Dinosaur's Alive added to Africa. • Worlds of Fun and Oceans of Fun are combined into one park. • New Slide complex (Predators Plunge/Shark's Revenge/Constrictor) added to Oceans of Fun • Miss Lizzie's Chamber of Horrors replaces Master McCarthy's Doll Factory for Halloween Haunt |
| 2014 - |
• Steelhawk added to Americana (opens in July) • All Wheel Sports Premiers at Heart of America Theater • The Wilburn Gang/WOFRR Train Robbery Show returns • Boneyard added to Halloween Haunt (replacing Fright Zone) • Octopus/Oriental Octopus removed. • Ed Alonzo's Psycho Circus of Magic & Mayhem premiers at the Tivoli Music Hall for Halloween Haunt |
| 2015 - |
• Splash Island added to Oceans of Fun • Scrambler moved back to Scandinavia to replace Octopus and re-named Scandia Scrambler • Blood on the Bayou added to Halloween Haunt • Thunderhawk removed • Krazy Kars removed • Phileas Fogg character discontinued at the end of the season. |
| 2016 - |
• Woodstock Gliders, a Larson Flying Skooters ride added to Planet Snoopy • Beagle Brigade Airfield and Snoopy Space Buggies added to Planet Snoopy • Linus Launcher and Snoopy Junction added to Planet Snoopy • Asylum Island re-named to Urgent Scare • Le Carrousel removed from Europa • London Terror moved to Americana and re-named London Terror Square. |
| 2017 - |
• New park gate opens in the Scandinavia section of the park • Falcon's Flight introduced to Europa • Mustang Runner introduced to Americana • Finnish Fling removed from Scandinavia • Big Game Hunt/Shooting Gallery removed from Africa • Steadman Plaza removed from Scandinavia • London Terror Square renamed Ripper Alley • Skeleton Crew added to Scandinavia • Winterfest festival introduced. |
| 2018 - |
• Floral Clock re-introduced to Africa • Nordic Chaser opens in Scandinavia • Timber Wolf's 560-degree helix replaced with a new banked turn • Peanut's Playhouse closes • Chambers of Horrors Condemned replaces Chamber of Horrors for Haunt • Khaos Unleashed replaces Urgent Scare/Asylum Island |
| 2019 - |
• Cotton Blossom BBQ introduced to the park • Pigpen's Petting Farm opens, re-using the structure of Peanut's Playhouse. • Grand Carnivale Festival introduced to the park in July/August • Peter Peter Pumpkin Eater debuts during Haunt. • WOFRR does not operate for the 2019 season. • Diamond Head slides are removed from Oceans of Fun at the end of the 2019 season. • Last season for Winterfest. |
| 2020 - |
• Due to COVID-19 Worlds of Fun does not open for the season until June 22nd and closes Sept. 7th. • Oceans of Fun does not open at all for the 2020 season. • Boomerang, Cyclone Sam's, Steelhawk, Falcon's Flight and the WOFRR do not operate for the 2020 season. |
| 2021 - |
• Due to COVID-19 Worlds of Fun does not open for the season until May 22nd. • Riptide Racers opens at Oceans of Fun • ELI and WOFRR return to operation on August 7th |
| 2022 - |
• Due to COVID-19 Worlds of Fun does not open for the season until April 30th. • Monsoon, Falcon's Flight retired after the 2022 season. • Linus Beetle Bugs, TurnTyke and Peanut's Yacht Club removed after the 2022 season. |