Most iPhone Game Apps are Not Original, that doesn't mean they're not Good. – Troika Review

Yeah, there is a $3.99 licensed App of the card game Set. So, Troika is another adaptation of the card game... and it's FREE. I'll take a free clone over a licensed $4 clone any day of any week. It's a great exercise for the thing between your headphones.
Review by longtemps on Troika.