A very simple game of avoiding obstacles by pivoting as you move along a set path. There's not much to it, but it's satisfying and engrossing. Each obstacle is introduced to you one at a time, and the game makes sure you master it before moving on and mixing it in with others. The regular and hard voyages are more or less the same each time, but there are more randomized modes as well. It's a fantastic time waster, and I've gone through various voyages many many times idly. It's always good!