Nintendo shocked the world with its introduction of Super Mario Maker. While fans wait the typical amount of years between the main Mario game releases, fans can create and play their own Super Mario game. With tons of content in both Super Mario Maker games, it's easy to see why they were hits.
Since Super Mario Maker and the sequel were such a huge success for both the Wii U and the Switch, it's surprising that Nintendo and other studios haven't tried to capitalize on it. There are many famous franchises out there that would likely benefit from the same type of treatment.
Mega Man
This one is a no-brainer: there were eight games on the original NES, more on the SNES, PlayStation, and even newer games including Mega Man 10 and Mega Man 11. Much like Super Mario Maker, a Mega Man maker would feature the many styles of the franchise to utilize.
There are also a wide variety of giant bosses, enemies, powers, and mechanics that could lead to some wild gauntlets created by fans. This Mega Man maker could also use Bass, X, Protoman, and Zero as alternate playable characters.
Castlevania
Since Konami seems to be unwilling to provide fans with any new Castlevania games, why not a Castlevania creator? This could allow for either the classic, linear action-platformer style of the original four Castlevania games or the more-famous Metroidvania gameplay style of Symphony Of The Night.
Fans could create labyrinths of castles that would shatter controllers everywhere. Others could create more straightforward levels in forests, cemeteries, and castles. Add the many powers, weapons, characters, and bosses from the very long timeline of Castlevania and it would surely be an instant hit.
Rayman
When it comes to Rayman, the series seems to get better and better with each new release. Many have argued that Rayman Legends from 2013 was the best game yet. Since then, the Rayman series has been dormant but ripe for more.
If given the proper revamp to old-school Rayman styles, a level creator for the series would easily make UbiSoft a fortune. Especially with Rayman Legends as one of the styles to create levels with.
Call Of Duty: Zombies
Typically, the multitude of Zombies maps has a lot of content with fans still coming back to the many maps of several games after so many years. However, sometimes the maps can get a little dull and once all Easter Eggs and story objectives are complete, it's difficult to get that urge to replay them sometimes.
A big help to that could be a map creator for Zombies, utilizing assets and characters from all the many maps of the franchise. Yes, that would make for a very tedious process but if Doom can do it, so can Call Of Duty. It could allow for fresh maps with new Easter Eggs to discover every single day.
Donkey Kong Country
Another Nintendo franchise that has many styles to work with; from the original trilogy on the SNES to more recent games like Tropical Freeze. Donkey Kong Country boasts many bosses, mechanics, characters, and level designs that could easily be implemented.
Since Donkey Kong plays completely different from the Super Mario games, a Donkey Kong Country with a level creator would still stand on its own, providing a fun experience that would keep fans entertained until the next main game.
Mario Kart
Nintendo has already experimented with a Mario Kart track creator already with Mario Kart Live: Home Circuit. A unique AR experience for sure but imagine being able to create a new Rainbow Road or a new Bowser's Castle track.
An option to choose what power-ups are available on the map would make for some fun and frustrating tracks. Imagine one that only allowed annoying items like bananas or only red shells. There are also many Mario Kart styles to pick from: the original SNES, Nintendo 64, GameCube, Wii, and Wii U/Switch versions.
Kirby
When it comes to experimentation, no franchise is better known for it than Kirby. Whenever Nintendo wants to test a new idea, they usually use Kirby as their guinea pig. This is why Kirby has seen so many weird and drastically different gameplay styles over the years.
As a result, this means that a Kirby creator could implement these many styles. Classic side-scrolling, Epic Yarn's unique puzzle mechanics, or Mass Attack's cloning abilities. So many variables that fans could make into either classic fun levels or ones so difficult it would melt brains.
Crash Bandicoot
Speaking of difficult levels, the Crash Bandicoot franchise has seen quite the resurgence ever since the N. Sane Trilogy was released. It led to a stellar racer with Crash Team Racing: Nitro-Fueled and arguably the best game of the series: Crash Bandicoot 4: It's About Time.
It was difficult but beloved in nearly every regard but imagine what horrors the fans could create with the ability to create levels out of Crash Bandicoot 4's style. The speedrunning community would likely be thrilled and terrified with the release of a Crash creator.
Sonic The Hedgehog
With Sonic having a legacy of over thirty years worth of games, it's shocking that Sega has not attempted this already. Sonic's 2D sidescrolling adventures have gone through so many changes that a level maker would have seemingly endless content. From the original Sonic The Hedgehog to Sonic Generations to Sonic Mania. Even the surprisingly successful live-action Sonic movie could provide content for a level maker.
Even some of the stranger ones including Sonic Unleashed and Sonic Colors might actually be done better in the hands of fans. As a bonus, there could be skins for characters based on their movie versions or even voice-over lines.
The Legend Of Zelda
There's no way to make a full Legend Of Zelda game considering how massive they are. However, within each game usually are several large temples and dungeons that hold bosses, artifacts, and puzzles. So logically, a dungeon maker for Zelda seems like the perfect thing for fans.
Nintendo seemed to experiment with this idea in the Link's Awakening HD remake. While very basic, it could be the seed that could allow for dungeons in the many classic Zelda styles. The original, A Link To The Past, both Link's Awakening games, Minish Cap, etc. Add characters like Zelda, Impa, or Linkle and a dungeon maker has the potential to be even more successful than Super Mario Maker.