I noticed they changed the rules of Tetra Master slightly - in the original, if you place a card with two arrows facing arrows on opponent cards, it would let you select which battle to do first, and if you won the first one it'd do the next battle right after (assuming you didn't take that card by combo, of course). Now it only runs one battle for each card placement. I don't mind either way, but the bugs that have been introduced in Tetra Master are quite frustrating. Let's just say, if you didn't find Tetra Master frustrating before, you certainly will now. If you did find it frustrating before, you should probably just leave it alone now.