I'll have to agree with you queen of hearts, slots do seem like the safest casino game to play.
You can put in as much as you want and walk away when the machine is not paying out for you.
I think the same thing can be said about some table games too, if you sit down and buy a set limit and then walk away if you lose it all.
The same thing can be said if you win a lot while playing games, whether it's slots or table games, get out while you're ahead.