(Edit) This thread contains two spreadsheets which can be used to calculate/project a 20K culture victory. This first post contains a spreadsheet I wrote. In the 5th post AlanH has posted a zip file containing a spreadsheet started by Greebley and then much enhanced by AlanH. You might prefer either or both spreadsheets (End of Edit) This is an Excel worksheet I developed to help me in a 20K culture game. It has a row for each Civ wonder/ city improvement which increases culture. For each one you enter an indicator for whether it should be included/excluded from the projection and if included you enter the year it is built. The spreadsheet can be used in two modes: 1) For the given improvements, project the 20K culture date. 2) For the given improvements, calculate the city's culture at a particular date. There's an "Instructions" button at the top-left of the spreadsheet which will display brief usage instructions. When prompted by Excel while opening it, you must enable macros for the spreadsheet to work. It may have some glitches (I have checked it through one 20K culture game and it was bang on for that game), and the user interface isn't wonderful, but here it is in case anyone wants it: Click here to download 20K calculator Edit: updated spreadsheet on 2004/6/26, added Conquests wonders.