I’ve played 2 games of this the first game only one extinction tile came out and then we won and the second game we couldn’t get a single biome tile out and then we lost as all the extinction tiles came out. I suppose we also have to each work on only certain biome icons each for the teamwork to be best we really have to keep an eye on what biomes on plants and animals we are taking, that second game we just couldn’t get our matches to show up at the same time. And we nearly never had a card that we could give to our teammates that would help with their matches when it went to acquiring biome tiles and animals.
So teamwork is the key to winning a true co-op game.