It should be the other way round because you get addicted to something you do repeatedly. Assuming you play multiple games there should be less chance of you getting addicted to one but when it's only one game that you play all the time, you're definitely going to get addicted and it's just a matter of time before the addiction becomes uncontrollable. This can defer though depending on the person we're talking about but I believe on a large scale, those that gamble on one particular type of games are the ones that get addicted more.