These were adventures created by TSR that were done at the time of AD&D (1st Edition) but had their own very simplified rules using a d12 mechanic.
There were 4 Catacombs books.
From the books:
Catacombs books represent the ultimate challenge in role-playing adventure. Through lavish illustrations, you journey from chamber to chamber in search of the precious object of your quest. Your analytical powers are tested to the utmost as you must decide how to deal with the weird and wondrous creatures and artifacts you encounter.