Scoundrels of Skullport, depending on how you want to count,...
Lords of Waterdeep was one of 2012's best games, and it did it by not doing anything too fancy. It valued straightforward rules and intuitive strategy over originality and cleverness, and it ended up becoming one of my favorite eurogames of the last few years. Since it was able to achieve so much by consolidating the strengths of its genre and executing those strengths impeccably, it’s fitting that the Scoundrels of Skullport expansion operates on much the same principle. Instead of introducing a slew of new mechanics and complications, it falls back on the core strengths of the original game, while introducing a ton of new content and one very well-executed new mechanic so good, it feels like it always belonged in the game.