Masked Quest

Masked Quest is a romhack made by Garo-Mastah that significantly updates the game, adding new puzzles, maps, and changing some core mechanics of the game. Unfortunately, this romhack has a bit of a reputation for being incredibly poorly designed, with numerous softlocks, crashes, and poor game design elements. Think of it like a really bad Master Quest romhack, making needless changes and ultimately something that will probably troll me repeatedly, hopefully making it a very entertaining watch :)

Here are the "improvements" it claims to have made taken from its download page:

-Some dungeons modified.
-A new map which replace the Lottery Shop named, “Town Museum”.
-Link and his forms have each individual colors.
-Difficulty increased.
-Sun´s song restored.
-The infamous Moon trial are not optional anymore, with some mask required, perfect for speedruns.
-The 3 MASKS are required for advance to the next trial to gets into the Final room (Majora), the moon field also requires 2 important items in the game To climb towards where is the Majora masked moon child to accept the final challenge of the game, and talking about -of moon children, 10 masks are mandatory for gives to the moon children that reminds me the Ganon trials in the Ganon´s Castle in OOT.
-Beta enemies are back.
-Few Sub Bosses are more harder to fight.
-Some aesthetic changes in stages so do remember to its 3DS counterpart.
-Some text are changed and are added for the items, songs and swords.
-The transformation masks have special elemental powers in some attacks (ex. Goron Spikes have the ability to burn some enemies and the -Fierce Deity Link is capable of kill enemies with his Sword Beam).
-The Scarecrow´s song, the powder keg and the Elegy are useful.
-Link and his all forms can do manual jump, in 2 different modes, forward and stand jump,
-The shield crouch stab is disabled.
-FD Link have the Adult Link´s size and can open lifting dungeon doors, and can be usable anywhere with no restrictions of any type, he finally can use regular items & weapons, but he can´t use the hookshot, bow and magic arrows.
-Goron Link have the walking speed to match with MM3D´s Goron Link walking speed.
-The hookshot range is lightly extended.
-Zora Link´s double cutters´ range is extended for long throw the fins.
-New Prizes from Romani cows and the rupee wallets.
-The normal wallet has a new digit.
-And new gossip stone hints.
-D-PAD can now be used to access all three transformation masks and the ocarina, allowing a total of seven items to be accessible at all times. Note that this means that the map is no longer possible to toggle off.
-When using the bow, magic arrows can be cycled in a similar fashion to Wind Waker’s magic arrows by setting one and pressing the C buttons + R
-new custom enemies add some unique feels and challenging battles and with new obstacles.
-Some enemies´ desc. are restored.