As of version 0.095g, endings have been implimented into Yume 2kki. The ones currently found are listed below.
Note that all of these endings require you to drop your effects at Urotsuki's Dream House. To do this, equip an effect in the trophy room, go up to the pedistal that corresponds to the effect, and then drop it.
<WARNING: ENDING SPOILERS AHEAD. DO NOT READ UNTIL YOU HAVE COLLECTED ALL THE EFFECTS. THE VIDEOS SHOW THE ENDINGS.>.
If you get all 4 endings, you will get a effect "key". At that time you will be able to open the door in the reality. Go through the utility room and press Z in front of the key hole, you will be transported to the authors' room.
Ending #1
This ending can be seen by going into the Trophy Room in Urotsuki's Dream House and dropping all of your effects, then waking up. Pinch your cheeks while you're awake. The screen will then fade to black,thumb|right|300px|Ending #1: Books
{C}{C}and {C}{C}Urotsuki will be stuck in a black screen. Pinching your cheeks again will cause her to wake up in her room, with {C}{C}books lying all around her. Pressing Z or X causes Urotsuki to get up. She walks over to the shelf on the left, puts the books away, then proceeds to leave the room.
Ending #2
This ending can be seen by going into the Trophy Room in Urotsuki's Dream House and dropping all of your effects, then waking up. Once you do, save and check outside on your balcony. There should now be a staircase there, and if you walk up to it, she'll climb up the staircase. But, don't actually jump off. Go back down, and she'll throw it off the balcony, rid of it forever.
thumb|right|300px|Ending #2: Freedom
{C}{C}The next shot shows us Urotsuki as she finally opens the door, and proceeds to go outside. Then a new credit sequence rolls unlike the others: Urotsuki is on her Bike effect, passing by some other characters she's met through her adventure. It ends with her getting off her bike, and walking into a house. This is likely the good ending to the game, or the true one.
Ending #3
This ending can be seen by going into the Trophy Room in Urotsuki's Dream House and dropping all your effects. Then, wake up. Once you wake up, you'll find the same thing Madotsuki did: A staircase, leading off of her balcony. If you walk up next to it, she'll climb to the top. Press X, and Urotsuki jumps.thumb|300px|right|Ending #3: UFO Game
{C}{C}While she's falling, other characters you've met throughout the game will appear around you, with strings attached to some of their heads. Then it fades to black with a big THUD....And it turns out she had been in a claw grab game the entire time, and Urotsuki herself was a small plushie! A small schoolgirl wins Urotsuki, and then runs off with her. The next shot is of the girl sleeping, with Urotsuki, as a plushie, sitting on the floor next to her. Then the scene fades.
Ending #4
This ending can be seen by collecting 138 wallpapers of the total 140, going into the Trophy Room in Urotsuki's Dream House and dropping all of your effects, then waking up. Go to the balcony and you find the ladder is not on the left, but in the middle. Walk up and climb the ladder, you'll see a train coming to you, and a black human-like creature invites Urotsuki to take the train. Then the train runs in the space, with the credit sequence rolling below it. The last shot is of Urotsuki sitting with the black creature, and the text "Fin" located at the bottom-right.thumb|300px|right