I Triple Triad quite a bit but I can't say I enjoy the actual gameplay against NPCs, only the card collecting. Feels like every NPC I duel has the Chaos rule for some reason. If they don't have Chaos, they'll have Roulette which will land on Chaos. Pair this up with absurdly low drop rates on even the most basic of cards (on an alt I had do duel the Triple Triad tutorial NPC around 25-30 times for the 1* card to drop) and I can only think the person behind this mini-game is a complete sadist.

Plus/Same with the All Open or Three Open rule can be quite fun however. Finding patterns on NPC duelists and manipulating how they place their cards is also enjoyable.