There is a horse in the middle of the field. It wants to escape, run free, to graze upon the grass where it thinks it is greener. The horse knows not of the dangers of the outside world, for it is simply a horse. So what must we do? We must put up enclosures to form a pasture for the horse, yet we only have so many walls to use, so we must be choosy. This, more or less, is enclose.horse, a daily puzzle game where you must stop a horse from running away to eat grass.
