The civilised world holds on by a thread. The mouse kingdoms are dotted with the forgotten vestiges of past cultures. Even modern settlements can fall to disease, starvation or predation all too quickly. There are many places where lost wealth can be found by brave mouse adventurers.

This set of tables creates seeds for adventure sites — the dangerous dungeons, caves and abandoned settlements that your party of mice must brave to bring back treasure.

Roll	History (d20)	Ruination (d12)	Denizens... (d10)	...searching for/guarding (d8)	Secret (d6)
1	Ancient bat cult temple	Flooding	Mice, driven mad or desperate	A safe place to live or hide	Monolith humming with arcane energy
2	Long-abandoned watchtower	Magical mishap	Mice, magically altered	Cache of fine food	Preserved precursor beast
3	Noblemouse's country manor	Age and rot	Rat bandits	Lost family or friend	Signs of human experimentation
4	Hidden winter storehouse	Human destruction	Rat King's warband	Ancient, valuable artworks	Forgotten grave of an ancient queen
5	Burial site of ancient mice	Overrun by mould	Original residents, strangely twisted	The last scraps in a picked-over ruin	Path into the veins of the earth
6	Warren dug by rabbits or foxes	Shifted between realms	Ghostly spirits	Rare alchemical mushrooms	Portal to faerie realm
7	Human house or other building	Attacked by great beast	Faerie advance guard	Strange and powerful spell
8	Sewer or drainage pipes	Disastrous storm	Foul-tempered snake	Vast horde of pips
9	Claustrophobic ant-dug tunnels	Haunting spirits	Infestation of insects
10	Massive tree, carved out by mice	Mysterious abandonment	Cat lord and their servants
11	Wizard's tower	Internal warfare
12	Settlement's grain mill	Disease
13	Rat king's nest
14	Skeleton of a great beast
15	Witch’s academy
16	Gatehouse to faerie realm
17	Deep mine
18	Bandit's hideout
19	Natural cave
20	Mouse settlement