I want to model growth in a colony of cells on a 2D surface. I want to see how a mutant cell appears that appears at time X has a growth rate X times greater than other cells in the culture, how it will spread over a 2D surface competing with the original cells. Are there any tools available to do such simulations? I have worked with simulation software like ms, but am not aware of anything for doing these kind of simple spatial simulations. My goal is to see what the spatial distribution is of the 2 cell populations after time X. Thank you in advance for your suggestions.