If it's got pieces or parts that come out of a box then its a 'Boxed Game' category.
(Cards, boards, dice, a little car, battleships, etc)
Tweaking a well-known game is a Recreation Therapy speciality. Here's a few of my favorites:
A classic.
Let's see what we can do with it.
A standard deck of playing cards, a mystery deck of consequence cards, and everyone just tryin' to avoid be the loser. This simple game is a riot that will have you giggling non-stop.
Everyone's played Pictionary before but have you seen the new twist? Spoiler alert, it involves dough you can play with....