Super Mario Bros. X: Sea Side Adventure

Super Mario Bros. X: Sea Side Adventure is a fan-made Mario story being developed by Legend-tony980 and Prince Ludwig. It is the direct sequel to Alternate Kingdom, occuring several months later. The plot is about the heroes (Mario, Luigi, Yoshi, Princess Peach, Toad, Link) trying to save the new Sea Side from peril. Like Alternate Kingdom, it takes place an unknown amount of time after the events of New Super Mario Bros. U and one of its Super Mario follow-ups.

Sea Side Adventure will use almost everything what Super Mario Bros. X had, including non-Mario elements like Link and Zelda, as well as the Billy Guns, Toothies, and Flamethrowers. The plot of the series will also be based on the Invasion episodes of Super Mario Bros. X. Since Sea Side Adventure will have one of Super Mario Bros. Z's features, it will make the series take place after the events of Super Mario Bros. Z, despite not being an actual sequel.

The Game
The game was designed in Super Mario Bros. X. It may have been postponed due to Super Mario Bros. X's limits, but the developers still hope to successfully finish Super Mario Bros. X: Sea Side Adventure. It is unknown if it will be finished or cancelled, but it's known that the game will probably consist max 14 worlds instead, making King Varun the primary final boss.

Comic/Flash Animation
It was announced by Legend-tony980 that they will make a possible comic of the series then probably animating it in the future, though they already had planned few arcs, both official and filler arcs. The Flash Animation is confirmed, and will probably start sometime in the future.

Planned Arcs
TBA Arc (official)

Tropical Islands Arc (official)

Vanilla Dome's Sealed Realm Arc (official)

Subcon's Seperated Landscapes Arc (official)

Yoshi's Great Paradise Arc (official)

Great Dinosaur War Arc (official)

Invasion of Sea Side Kingdom Arc (official)

The Vacation Arc (filler)

The Shroobs and the Shadowreds Arc (official)

The Desert's Seventh Sun Arc (official)

Link's Incarnation and the Sacred Forest Arc (official)

Invasion of Illusia Arc (official)

TBA Arc (official)

The Koopa Prince and the King of Darkness Arc (official)

Firey Land of the Dead Arc (official)

TBA (filler)

TBA (official)

TBA (filler)

TBA (official)

TBA (official)

Heavenly Skyland Arc (official)

Iced World Arc (official & filler)

TBA (official)

A World From Underground Arc (official)

TBA (official)

TBA (filler)

TBA (official & filler)

TBA (official)

Final Arc (official)