GA's are sensitive to the starting-size of the population, which is by the way hard to define for landscapes of unknown shapes. Run several populations of different size on the same landscape and compare the results. An eventually existing population is discarded. Works only if no landscape is being built at the moment. Cancels the building of a landscape or the run of evolution, respectively.
Population Creates a new Population with the size indicated in the field left to the button.
A reasonable size lays between about 20 and 200 individuals. The button changes its label depending on the next step. Pressing the button performs and animates the step. Go starts the run. With the scrollbar you control the speed of calculation.