The use of RPGMaker is impressive, especially for the "gameception" that occurs later on. It was innovative, especially in regards the "glitchy" effects and the distorted OSTs t6hat appear later.
The premise is unique, with the symbolism with the video game cleverly implemented. There's also the mystery of Mei's condition that is given just enough context for us to grasp her plight. Not everything needs an explanation, especially when the quotes and game symbolism fill in all the holes.
The point-and-click segments, while innovative, felt tacked on as well as the choices we were given. A lot of the interactions amounted to "oh, this isn't what I want" and vice versa. Now I only played this once and got the "Little Bird" ending so I imagine the choices do have merit. But at the same time I believe that they could've been implemented earlier and possibly even given more purpose in the game. But again, the scope presented to us by the game itself, especially in regards to the one-month time limit are more than enough to make up for these nuisances.
Best of luck in the jam!