Silex and the city

The year is 40,000 B.C. The entire world seems to obey the laws of natural selection. Well, not entirely... One small valley of indomitable cavemen still holds out against the idea of progress. Having no idea is the best idea! Progress is fake news! Evolution is what's leading humanity to its demise, and that's a fact! Thankfully, a small group of enlightened cave-dwellers sees things as they really are... Help the Dotcom family avoid the plague of new ideas, the fate of humanity is at stake! Make the best use of your cards... to invent as little as possible!