This is a mid-length Twine game with large illustrations on each page.
You play as a pony sailing an ocean, delivering mail everywhere you go. You meet a variety of NPCS, encounter environmental effects, and so on.
The first time I played, I visited many different locations, none repeated, and relatively quickly found an imaginative and fun battle involving kinds of mail
My second playthrough, I encountered a lot of repeated locales and content, and it took a while to find the battle.
I would rate my first experience as a 4-star experience, and my second playthrough as a 3-star experience. Averaging and rounding up gives 4.