IIRC, in Neverwinter Nights 2, there's a feat that was originally only available in the Collector's Edition called Blessed of Waukeen. Waukeen is the goddess of trade and wealth, so it was lampshading the fact that you're gaining an advantage by spending more money.

For me, definitely Auto Assault Collector's Edition, which is (was) basically an online Rock'n Roll Racing.
Sounds good on paper - modifying cars, adding weapons and armour - except when I bought it (on sale), the servers had already been closed down.

The only thing that stands out to me as worse than Dead Island: Riptide would be Dante's Inferno. If I won, I'd have poured all the booze out the limo window and run off with the treasure chest. How's THAT for wrath!