Does anyone know hacks for this game is still available?
For example, the ability to see the cards in the hand and the top card of the opponent
My opponent has just played in the most optimal way against my traps, as if he knew what was there and what I would draw from my deck next
yes. do a quick search and you can find several forums advocating the creation and development of cheats for this game. konami should look into those sites asap.
Often, you can guess people's trap at a high level by thinking of what's popular. I like to think of a 'worse case scenario' (usually drowning, or D.Prison) and play around that. Most of the time that pays off. Also, they could have used the skill "mind scan" if it was early in the game.