The Design Room allows you to unleash your creativity and construct your own battlefields. You can place various terrain types, properties, and starting units for both sides. This feature is not just for fun; it's an excellent tool for understanding map design principles and how different layouts impact strategy. You can create scenarios to test specific unit compositions, practice defensive maneuvers, or design intricate puzzles for yourself or friends.
When designing a map, consider balance. An overly biased map will not be fun or challenging. Think about the flow of battle, where choke points might emerge, and how different COs might fare on your creation. You can save your custom maps and play them in Vs. Mode. Experiment with different sizes, terrain densities, and property distributions. This hands-on experience with map creation will deepen your appreciation for the strategic depth of Advance Wars and improve your overall tactical understanding.