34. Phoenix Wright: Justice for All
I've enjoyed all the Phoenix Wright games (even Phoenix Wright vs Prof Layton which was... interesting) but my favorite is this second entry in the series. Because it had the courage to ask 'what if your client is actually guilty?' In a series built around defending the innocent that was the single best story twist they've pulled off. Especially because it isn't just a matter of 'casting sufficient doubt' to get the murderer off. In Ace Attorney universe somebody has to take the heat, so you have pin the blame on an innocent person to get away with it or an assassin working for your client will kill your friend. It pushes Phoenix's character to the brink as he uses the same tactics to frame someone that he typically uses to defend the innocent, until with the help of a friend he finally finds a way out.
It's still my favorite case in the whole series and I wish they'd have another guilty client in a future game since I think there is still more potential in the idea.