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American Megafauna

#639BGG ↗

1997 · 1-4 players · 360min · weight 3.82 · 351 ratings

v2 v3 v4 wide v4 deep

BGG raw

ID
639
Name
American Megafauna
Year
1997
Rank
6870
Min players
1
Max players
4
Playing time
360
Min playtime
90
Max playtime
360
Avg weight
3.8163
Num weights
49
Bayes avg
5.67388
Average
6.84872
Users rated
351
Num owned
611
Wanting
77
Wishing
229
Num comments
214
Fetched at
Wed Apr 29 2026 05:34:55 GMT+0000 (Coordinated Universal Time)
Mechanisms (3)
Auction / BiddingSimulationVariable Player Powers
Categories (3)
AnimalsEnvironmentalPrehistoric
Description (2053 chars)

From the designer/publisher: A quarter of a billion years ago, an unknown catastrophe engulfs the Earth. The swamps and ice caps of the Permian are replaced by the blistering deserts of the Triassic. On both land and sea, 96% of the animal species die. In the corner of Pangea that will be known as America, small survivors cautiously sniff the post-holocaust air at the dawn of the Mesozoic Era. Some of these unspecialized quadrupeds have sloppy ever-replacing reptile teeth, these will be the dinosaurs. Others have sculpted "one-shot" teeth, these will be the mammals. The victor in this titanic ecological struggle will determine the masters of the planet. Clearly, the ruling reptiles triumphed since that day, 248 million years ago, and dominated for 170 million years. Only to be overthrown, in what must be the upset of the eon, by the mammals. Yet the contest is not over. American Megafauna pits dinosaurs against mammals in ancient America. The game is designed for two to four players, from ages 9 to adult, or can be played solitaire. It recreates the titanic contest of these two types of prehistoric beasts from the Triassic to the present. This is a game of ecology, evolution, and DNA. Players start as one of four nondescript archetypes, but can branch out to new species from this basic type by bidding on genotype and DNA cards as they are revealed. For auction "currency," players use gene coins from a "gene pool." DNA cards allow players to create strange animals, from cud-chewing crocodiles with antlers, to saber-tooth meat-eating camels. In the advanced version, the continent of Laurentia is occasionally flooded or glaciated; greenhouse levels change; and the three Milankovich cycles are handled by cards that occur with historical probabilities. Biome cards, including cicada prairies, mountains, ice sheets, and mangrove swamps, appear on the map in succession according to "climax" ratings. Expanded by: American Megafauna (Second Edition): Expansion Set Re-implemented by: Bios: Megafauna

LLM v2 (wide)

Not yet enriched at v2 (wide pass).

LLM v3 (deep)

Not yet enriched at v3 (deep pass).

LLM v4 wide (controlled-vocab primitives)

Not yet enriched at v4 (wide pass).

LLM v4 deep (archetype fit)

Not in the v4 deep-pass top-20% slice.