urn:cts:gwtc:duke_nukem_3d.walkthrough.eng.neoseeker_kmcleod_jan_21_2008:
urn:cts:gwtc:duke_nukem_3d.walkthrough.eng.neoseeker_kmcleod_jun_29_2007:
urn:cts:gwtc:duke_nukem_3d_atomic_edition.walkthrough.eng.neoseeker_kmcleod_jan_21_2008: