A nice prototype, you can make a really cute game out of it! I was a bit confused at first because of some bugs (I think I fell under the world when I went to the left corner outside. Also dialogs keep repeating if you press space and stand near NPC.) Getting the frog was a tough task, but when I figured out you can hold space to jump higher, I accomplished it :D. Music is nice! My favourite tracks are spoony.ogg and tellmewhy.ogg (jk, the main menu track is nice). Good job!
(also fullscreen is F2 for me, not F1)