RuneQuest Ruins of Glorantha (4e)
In the first age¸ gods and men and stranger creatures built great cities and raised towers. They made wonders and art beyond compare and in the end¸ they tried to make a God. Then Chaos came and ruined everything and in the last desperate days¸ they built fortresses and refuges.
"This is the second age of Glorantha now. The relics and remnants of elder empires are everywhere in Glorantha. These haunted places contain magic and treasures beyond compare. If you have the courage¸ if you have the skill¸ then seek out the legends of these once-great cities and castles and plunder their secrets!
"Soon¸ the great empires of the Second Age will also be washed away. Learn from the past¸ hero and you may survive the ruin that is coming. There are secrets to be unearthed and monsters to be fought before the world ends. What will you find in the dark places underground?