Scythe

You control a faction in an alternate history version of the 1920s. You explore territories and produce resources while building giant mechs. The engine building aspect is very satisfying as your empire slowly grows. We usually grab a few drinks before setting this one up. The rules are intuitive enough that you can explain them as you play the first round. It has a good balance of luck and skill, so new players still have a fair chance of winning. The interaction between players is frequent and keeps everyone talking. I appreciate that it does not overstay its welcome and usually wraps up in under two hours. You will probably end up thinking about your next move while others are taking their turns.