I like risk, but it's not good for my nerves it takes too long to end a game. So I will say monopoly, though it has the same problem you can play for hours and after a while you start losing your mind.
That is the second time it has happened. I try to copy and paste something because of the 30 second thing, but it doesn't work so i accidently paste something else, and click submit before i realize it.
Anyway I also like Chess. It doesn't take that long and it makes you think a lot. Its better than Checkers
Clue is a fun game. I like boardgames that take a lot of strategy. When you play monopoly do you trade properties? Do you do auctions if someone doesn't buy a property? Do you put tax money in the middle of the board and then if you land on free parking you get it? Do you get $400 for landing on go instead of just passing it?
I play with all those rules except I don't have auctions