: Early human ancestors, often equipped with primitive tools like spears or clubs, can be deployed to test how primitive technology stacks up against raw biological power.

In evolutionary biology, this is known as the . Predators evolve better hunting tools (teeth, speed), forcing prey to evolve better defenses (armor, camouflage, or herd behavior). You can see this reflected in-game when choosing between "glass cannon" units like Raptors and "tanks" like the Ankylosaurus. The Human Element: Technology vs. Nature

: Features mammals like Woolly Mammoths and Sabertooth Cats (Smilodon). This era highlights the evolutionary strategies for body size as animals adapted to colder climates. The "Arms Race" Concept

: While a lone human is weak, a group using "Mutual Aid" rather than just "Mutual Struggle" was a formidable force.