I changed the logo because I simply didn't like the old one, I found it extremely underwhelming. Flat, boring and most of all it simply didn't fit the tone of this particular game. I'm not exactly a graphic designer either so I do the best that I can with what I have at my disposal. Also, sometimes designs change depending on whichever platform it's displayed on.
Meaning that a design could look crystal clear in the final stage, then unfortunately become blurry and unclear when posted. Due to the pixel quality changing, thus altering the image. I'm currently finishing up a new logo design at the moment, so I hope to have that up soon.