Amazing job! I enjoyed all the puzzles, and I loved the atmosphere and the references to Groover's if.
I only had a little trouble with (rot13):
gur pernxl ubhfr - bapr v znccrq vg v ernyvmrq v arrqrq gung qnat qbbe bcra, naq v ybbxrq va gur ubhfr sbe vg hagvy v nfxrq gur pernxl zna nobhg fbzr fghss naq ur fnvq abguvat va gur ubhfr vf vzcbegnag (nygubhtu gurer vf n arrqrq gvpxrg vafvqr...)
Also, I found one minor bug:
Ng gur irel ortvaavat, nsgre fynlvat gur "qentba" lbh pna "k pebjq" naq trg n zrffntr gung fhttrfgf gurl ner fgvyy nyy gurer - gur fnzr zrffntr nf jura lbh ner svtugvat gur qentba.
Also thanks for all your tireless reviewing and list-making work :D