Studs is amazing at game rules, but big maps are trickier for it. If your game looks empty, ask for the map in small, clear pieces.
Try this
Start with a base, like "add a flat baseplate the size of a soccer field."
Then add pieces one at a time, like "add 5 platforms," then "add walls around the edge."
Be clear about what you want and where.
💡 Tip: careful asking Studs to "redo the map." It can clear what you made. Add to it instead.