Okay, few interesting things in there:
- you need to equip your units
- resources which you find are visible to everyone, that ensures competition
- Apparently there are different "acts" (like...eras?), and that some nations might not make it through the first act, and you can find remnants of these civs (like goody huts or ruins) later. I don't think I've read anything about the concepts of acts earlier, no?