I enjoy longer games. So a start 10.000 BC to outer space ( 2000-4000AC) are the best for me. (This is not the place for this but I use civ5 as medicine. Due to brainbleeding i lost balance part of brain. Only remedy are tiering the bran to forget balance. It works. This is why I log 500 600 hours playing. Used civ4 with mods but found civ5. Only lack support to Modders.) I have to admit I am a pensioned PdD and have used computers since the punchcard era. I greatly admire the Modders here. Please dont stop modding due to arrogance and lack of support from source.