I played the Toku game until T101. Not sure if you can get much out of this, but at least you can see what is possible. Spoiler : What you see here is what the workers should most of the time be doing. Cities are working improved tiles (I count oasis as improved) and workers are chopping settlers/workers. Kyoto is building a boat for the 4th city. Improving the food asap is so important you should have a work boat ready for the coastal fish spots! 11T later 3rd and 4th are founded. Now it's the time to start Mids (have masonry of course). This is why I need to build mines to capital, even if they are not great in the long run. Sailing will connect my cities and soon connect to Mansa, so no need to waste precious worker turns on roads. I have two warriors, which is enough for this date. should go to workers/settlers, not to units! 12T later I still have only 4 cities, but both the settler and the boat are on the way. Tokyo is putting into GW for fail gold, I definitely don't intend to finish GW on this difficulty. Mids is soon done so my -cap will get a +3 boost. Satsuma improved food first, now improving floodplain, stone is the least important tile there. 19T later I've expanded to 6 cities and will settle 7th next turn in NW of the screenshot. Settler is accompanied by a worker and a warrior. I traded aggressively (alpha to Mansa for IW+ part of medi, medi to Saladin for ph, writing to someone for some crap like hunt+myst) just to get value now as I'll be leaving them far behind pretty soon. Chose to go CoL, which maybe wasn't best. In general though, CoL-CS -line is good. I think currency is rather overrated (unless you have say over 10 cities). Soon Shaka finished the GW and I got some 370 for failing it. Got a GE and chose to go MC and bulbed machinery, mainly for fun. Now going towards CS so I'll have Samurais before 1AD. Anyway, mostly this is about empire management and not tech path. I don't really know what it is in particular that you did wrong, but you didn't grow your cities to the -cap. Too many buildings I suppose? I have two libraries, zero monuments.