are there any alternate endings?

[76561199142617869]

watched a vid of someone showcasing a yume nikki playthrough and somehow he got the "good ending" where madotsuki jump off her apartement in the dream world instead of real life, and than she woke up and finally can get out from her room in real life

probably fake but i still wanna know, and im too lazy to find out myself

[Ortort]

No such alternative ending exists. The video you saw is a fan-made edit.

That said, like much of the game, the 'ending' of Yume Nikki is, to an extent, what you make of it. How each player approaches and understands the ending is informed by what matters to each player.
If you want to get into opinions, I don't see the ending scene of the game as an inevitability, but rather a choice that the player has to consciously choose to undertake. Others see the ending as the last of a series of canonical events.

Further, what you make of the ending scene itself will have different implications, depending on how literally you want to read the game.

There is only one ending scene, but what you make of the events and images of the ending is up to you.

[Dazeychain]

Ortort is correct, but it's worth mentioning that the much-maligned 3d reboot thing picks up from where the original ending leaves off and has two different endings. It's worth checking out if that interests you, I honestly kind of liked it

[Jugdjay]

I think I see what you're talking about. There's a mod of Yume Nikki in which a 13th door to a new world would appear when you have all the effects. The ending you get at the end of this world sounds like what this mod's ending is.