Hey @yoav1994. Lots of players make their own simulators so they can evaluate how a specific set of placements would turn out. Here’s an old thread that talks about some early simulators. Basically, you can do whatever you want with the game state you were given. A simple way to start out is to make a copy of the game map and manipulate it by recreating how the actual game engine simulates each turn. The Rules and Docs page goes into depth about how this is done.