1. Culpa Innata
2. Sherlock Holmes vs. Arsene Lupin (aka Nemesis)
3. The Lost Crown
1 & 3 for their engrossing, immersive storylines and imaginative puzzles, and 2 for being an absolute joy and such fun to play.
Of the three, Culpa was the game I could barely tear myself away from to sleep/work/eat.