Yes, this was done in a month. The greener area which the houses were my own tile set from a game I was working on, but the mountain, cave, and organic areas was all made in a month. Including the npcs, monsters, player, and comic board, and of course the title screen.
A friend of mine Paterico Pereira help with the dash coding, sound, and music. But yeah this wasn't easy. I put hours in daily to pull it off and still didn't include everything.
Glad you liked it.