Campaign Book #12. Accessory to TWERPS Basic Set.
The player characters in TWERPS FILES take the part of investigators of assorted weirdness, either as special agents of the government, consultants hired for such work, or independent types who may very well run afoul of the authorities in their activities. Includes clear ziplock bag labeled GMS -10473, Barcode: GMS-10473, Manual with ISBN #0-922683-18-2, D20 die with sides numbered 0-9 twice, characters sheet GMS 10473-2/3, and Mapsheet GMS 10473-3/3.