I'm a big fan of the [**Kosmos 2-player series**][1]; not all of the games are great, but most of them are solid, and they're all geared specifically for two players, they come in small and easily portable boxes, and they're generally reasonably light while having just enough strategic depth to keep them interesting.

My favorite is [Kahuna][2], as I find the gameplay a bit more strategically interesting than most, and my girlfriend likes [Odin's Ravens][3] best. I've heard good things about [Lost Cities][4], but never had a chance to play it. There are many good games in the series; you can try sorting them by rank on [BoardGameGeek][5], and look through the first few pages to find the best ones.

![Kahuna box cover; an aerial view of verdant tropical islands, arranged in the shape of a handprint.][6] ![Lost Cities box cover; two adventurers stand in the gate of a ruin, with sunlight streaming from above.][7] ![Odin's Ravens box cover; An old bearded man with a spear and horned helm stands, with two ravens flying past][8]


  [1]: http://www.boardgamegeek.com/wiki/page/Kosmos_two-player_series
  [2]: http://www.boardgamegeek.com/boardgame/394/kahuna
  [3]: http://www.boardgamegeek.com/boardgame/4396/odins-ravens
  [4]: http://www.boardgamegeek.com/boardgame/50/lost-cities
  [5]: http://www.boardgamegeek.com/boardgamefamily/78/kosmos-two-player-series
  [6]: https://i.sstatic.net/7uU6R.jpg
  [7]: https://i.sstatic.net/s8iQD.jpg
  [8]: https://i.sstatic.net/r3iok.jpg