All of you who have problems and cannot undersnat the solution proposed by Ezlazeme, probably because he just blurted out the solution in a hard-to-understand way, this is how to solve the issue with the tech tree showing only Agriculture. 1. Find the file named "Total Mod (ALPHA)(v7).modinfo". This was situated in the folder path c:\users\[your name]\Documents\My games\Sid Meier's Civilization V\MODS\Total Mod (ALPHA)(v7). 2. Open it with wordpad or some similar program. 3. Find the line <File md5="B98B21C5B659ACABF5BA905C8AC0F126" import="1">LUA/TechButtonInclude.lua</File> 4. Change it to <File md5="B98B21C5B659ACABF5BA905C8AC0F126" import="0">LUA/TechButtonInclude.lua</File> 5. Save changes. 6. Play the game. I have another problem. Since the cities cannot produce something without research, and you cannot research without cities, and you cannot end turn without your cities producing something, i cannot end the turn. No, enter+shift does not work. Is this mod playable at all?