Hey, looks good! Just a few comments...
Intro screenies (and throughout your game)::: I advise that you use proper punctuation so people take you seriously.
Battle screenies::: I don't really like that font for some reason... It's a little big, first of all. Whether you want it or not is up to you, just a thought.
Professor Oak's lab::: That map looks a little roomy and unfilled. Try adding some furniture, or shrink the map a little. Plus, add an exclamation mark on the first screenshot in that set, and in the fifth screenshot, capitalize come and put an apostrophe in let's.
And for the third starter, I voted other. A Zangoose would be cool, but everyone would pick that instead of Zubat or Ekans. Personally, I would prefer a Grimer.
Keep up the good work and don't give up on this!