Empty rooms provide mice with a chance to catch their breath and prepare for the next challenge.

d20	Empty room feature
1	Abandoned insect nest
2	Cluster of mushrooms
3	Collapsed wall or ceiling
4	Dried bug shells on the walls
5	Furniture made of repurposed trash
6	Huge drawing of bat face on wall
7	Mess of tables and chairs
8	Newspaper clipping wallpaper
9	Overgrown with moss
10	Painted mural, now faded
11	Platforms hanging over rapidly flowing water
12	Roots bursting out of walls/floor/ceiling
13	Rotting pile of acorns
14	Scattering of animal teeth
15	Shiny candy-wrapper banners
16	Snake skull doorway
17	Steady drip of water from ceiling
18	Stern statue of an ancient mouse
19	Uneven and deeply cracked floor
20	White quartz altar