This game exemplifies the original feel of Star Trek. To explore the universe, to travel through the worlds, to understand the un-understandable.
The game is much shorter than I expected, given the other reviews. This is not really a drawback; the game has a fast pace and feels like an adventure. You explore various planets and stellar objects, with almost all motion achieved by manipulating "sails".
The gameplay diverges from Plotkin's usual games in that it is not very hard, and the focus is on fun over puzzles. The most similar game of his that I can think of is Dual Transform, which I also really enjoyed.
I recommend this game to absolutely everyone, as the enjoyment-to-time-requirement ratio is so very high.