Spyfest

I lost track of who was who about ten minutes in, and that's exactly what makes it great — the whole convention is in costume so you can't trust anyone's face. Bluffing your way through a room full of fake spies is way more fun than a normal hidden-role game.

The costume mechanic makes every round feel different since you can't trust anyone's appearance. I've played it with my group four times already and the bluffing gets louder each time.

Deducing who's lying becomes addictive fast, especially once you realize everyone's costume is also a clue. The secret information hunt forces you to pay attention to every conversation instead of just clicking through. Easily the most fun I've had with a hidden-role game in months.