You could tell me this was made by tobyfox himself and i would believe you then and there. First of all,the undertale humour is there. Love that. They really did a great job on the animations. In terms of gameplay mechanics and animations,i would say this game is better than undertale. I also liked how much personality Clover has. The rest of the characters are okay ig. The new soundtracks are bangers. Cant go wrong with those. I LOVE how this ost matches perfectly with Clover's running animation. Best fanmade game ever!

Me encanto el juego, debo admitir que la historia presentada y los detalles que se encuentran dentro de este son maravillosos.
Aun asi no siento que llega a ser tan bueno como undertale y en momentos se puede ver por la historia que es un fangame que rompe con la estetica de undertale.
Del mimso modo hay que recordar que el fangame tiene su propio pseudocanon que puede contradecir el canon original de undertale, pero a comparacion de otros fanworks siento que undertale yellow se salva mayoritariamente ya que trata de utilizar personajes propios y hace una minima referencia a los personajes, siendo mas que se aprovecha del lore de undertale para contar una historia original dentro de este mundo.

It's really hard to judge this game. First of all what this game does best is art and music, the environments in this game are goddamn gorgeous, the character design is great and there wasn't a single song I didn't like. However, the thing I think Undertale does best are it's characters, which is something I think Undertale Yellow lacks a lot in. Even tho I do like the main characters in UTY I don't really LOVE any of them like I did in Undertale and this is what I mean when I say it's hard to judge this game, I really wanna treat it as it's own thing but it's hard to not compare it to the game it's based on. The characters in Undertale is what makes the entire game for me, they are fun, silly and dumb while still leaving room for depth, but I hardly felt any of that while playing through UTY. It's so weird to me that I liked the side characters more than the main cast, I think that El Bailador, The Guardener and Axis were amazing characters that perfectly captured the fun of Undertale while the rest of the cast was just... ok. I really enjoyed the fights, some of them were SUPER creative and made me really look forward to finding more enemies. I do think that the final boss of the pacifist route was kinda lame lmao, don't get me wrong the visuals, music and story was pretty sick but the bullet patterns left to be desired, at first every "round" was a different thing that only happened once (which made it hell to get used to) then later in the fight it felt like the boss was just throwing literally anything at me without any care. Ending was pretty cool, not really interested in getting any other endings tho.

First playthrough: Neutral Route. Still sorting out my feelings on the game, and I'll have more to say when I do a Pacifist playthrough.

I genuinely do not have the words to articulate my feelings at the moment other than this: How the heck is this game FREE???

Side Note: UTY manages to be a more effective horror game in the last half-hour or so of Neutral Route than most indie horrors since Undertale came out. I think that's really funny but also a testament to how much these devs knocked the climax out of the park.