This repository contains the tools for exploring some extensions of Grundy's game and some results. The paper folder contains latex source and pdf with explanations and some results. superGrundy.sage contains the code to calculate the SG-values of the extensions. startjobs.sh starts several jobs to calculate SG-values of extensions. plot.sh contains code to turn the results into graphs with gnuplot. pdfplot.sh turns the gnuplot output into pdf. investigate.sh is just scratch space for calculating some values for investigation by hand. The results folder contains the raw output of calculations. The plots folder contains the plots.