(OK, I nicked this)
Find a medium sized, mostly round pumpkin. This will be your bowling ball. Help your guests empty 10 cans of beer. These will be your pins. Set them up a fair distance from the bowler in the standard triangle pattern. Take turns bowling with each person getting two throws per turn. However many cans are left standing is the number of drinks the bowler has to take.

A tub full of sticky labels with the name of a fiend, ghoul, murderer or monster on it. A chosen sacrifice selects one at random and places it on their forehead. They can then direct twenty questions, with yes or no answers to the rest of us in an attempt to identify Who "from the bowels of Hell" they are.
Booze should be involved at some point.

Last night’s "League of Gentlemen" reminded me of a game I doubt any of you will have played since before your age had reached double figures - Grandma’s footsteps. So, if the premise of Grandma creeping up behind you and laying bony fingers on your shoulder isn’t disturbing enough, "The Creeping Dead" would involve someone with their back to the minions of the damned (the rest of us) slowly advancing on them. When they turn around, any fiend caught moving is out (and must drink heavily as a penalty, of course). The game ends when either everyone is out, or the cold hands of doom close around the unsuspecting victims throat...