Order by the year each park was established. You place all 51 cards on one timeline, one at a time. You start with three lives, and ten right in a row wins a lost one back.
Order these national parks by the year each was established. Under every park's name is its state, province or country. One park starts on the timeline with its year showing. For every new card, choose a gap among the parks already there. Right, and its founding year appears. Wrong, and the park still lands in its proper spot, but it costs you one of three lives.
Most of the deck is American, with famous parks from Africa, Europe, Oceania and South America mixed in. The trap is that many landscapes were protected long before they got the national park label, so a famous place may have been upgraded much later than you'd guess. The early years of the park movement are crowded. Think about when the idea of national parks reached each country.
Want a longer game? On the deck tree you can tick this deck alongside any other one measured in release years and dates, and they shuffle into a single timeline together.
Here are 28 of the 51 cards you might be dealt, with 23 more in the deck. Their values stay hidden until you place them.