Simple and pleasant, with a chipery tone and slight alterations throughout the music that really adds a lot to it's overall vibe. I thought it was slightly repetitive, but that's probably the point since I can see this being used as a background music in a 8-bit game in loop. I thought there were some "off parts" in the music, like some notes didn't really belong in this cheerful and playful tone, but then I read the description and suddenly everything fits! Good work and good luck writting the game's OST! :D