Few more yet-to-be mapped Metroidvanias have come to my mind...
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Monster Boy and the Cursed Kingdom" - The latest entry in the "Wonder Boy" series by Sega, after a long time waiting for a new game, places a new hero, Jin, in the midst of a world-threatening situation caused by his uncle, Nabu, who went apparently insane, and is using magic to cast a curse that changes the kingdom's people into animals and bring out evil monsters to cause mayhem. Jin, having caught up in Nabu's scuffles, gets changed into an animal-like form by his magic, which upon finding more, discovers his newfound ability to change forms to combat evil. Its up to Jin, with the help of some people he meets along the way, to get to the bottom of the kingdom's predicament and the true mastermind behind it all.
That game's been really fun to play, and features a good couple of callbacks to past "Wonder Boy" games, too. I have no idea how large that game's world is, but I think it may be close to Hollow Knight's overall size... maybe.
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Blast Brigade and the Evil Legion of Dr. Cread" - That Metroidvania places one of B.L.A.S.T.'s agents, Jeff Jefferson, into a mission to stop the evil Dr. Cread, who has set up his evil base of operations on an uncharted island infested with his entire legion of robots, mercenaries, monstrous creations, and all kinds of freaks of his evilness he's created to achieve his plans of global conquest. It's up to the often bumbling agent himself to put a complete stop to Cread's plans, along with the help of a few allies Jeff encounters along the way, along with equipping an arsenal of weapons and upgrades.
It's a neat Metroidvania, another made through Unity, and in spite of its challenges, the gameplay's pretty solid.
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Noreya: The Gold Project" - Another recently made Metroidvania, made by the indie dev, Dreamirl, that places heavy emphasis of choice with consequence upon differing actions, as Kali, the deity of Light, fights against other super-powerful deities, under the command of the powerful super-deity, Salluste, beneath the City of Gold itself, Lemia, but Kali's choices heavily determine the outcome of her journey and how her life is set in the end, to follow honor and goodness and remain pure, or be gobbled by greed and darkness. That game holds 2 persistent worlds, but the journey there lean heavily on anyone's choices made by their actions.
The game's presently on PC, but console ports are in the works through the conversion from its own engine to Godot. Little note about that game, the worlds' maps were made in their
entirety through Tiled itself, the level map editor, and from Dreamirl's words, it only took about 8 to 16GB of RAM memory out of about 32 to 64GB they have to create them, and, from what I've read, that program slugged quite so slowly, despite the loads of RAM memory we have so far. I'm quite impressed about such a game with such big Metroidvania maps made there.
Also, a bit of insight, the game's title had a naming trademark dispute(don't ask me why, but I'll only say, its a bit complicated), and had to be renamed "Noseka", but after a few compromises, the name got reverted back to "Noreya".
This Twitter/X link from Dreamirl is here as proof -
https://x.com/DreamirlGames/status/1733051622551400829"
Prince of Persia: The Lost Crown" - Another installment to the "Prince of Persia" series from Ubisoft after a while, and made through Unity, too, but this installment goes straight into Metroidvania territory. It places the apparent-immortal, Sagron in the thrust of a dangerous time-threatening plot setting in a mythical city on Mount Qaf, the game's main setting, and seeks to uncover a great mystery behind the disruption of time, along with uncovering a hidden conspiracy that turns his allies against each other in the process. Its up to Sagron to put a stop to the evil scheme and re-stabilize time itself to save the world and existence.
The gameplay's really good, and the overall adventure's been fun to enjoy. It even has a story DLC, called "
Mask of Darkness" that expands the adventure and has Sagron facing a different threat, but once purchase, the DLC adventure needs to be unlocked by progressing through the story. No idea how large that game's world is, but I'm quite sure it is. I'm very curious about that.