If there is one it shouldn't be used. Both types of games are addicting in fundamentally the same way. The only thing that differs is the main trait which each game is using as its primary host. The "unethical" type of game is as unethical as the other, which means they're either both very unethical or both very not unethical, depending on how you want to look at it.
Addictive for games can just be shorthand for "you want to play it again and again". I don't see anything wrong with it when there isn't a more appropriate shorthand to use, except when used with games that are designed to make you pay more and more to play.
Engrossing
Captivating