51st State: Master Set is one of the newest games from Portal Games and a remake of the old 51st State with all expansions and revised rules. It practically brings Imperial Settlers back to the post-apocalyptic world of 51st State. I really like it. The asymmetry of the factions is not as pronounced as in Imperial Settlers (there by the own card stacks), but the game is much smoother and feels faster and more interactive. And the solo game is easier to play. Overall, I really like it, especially for the solo game even better than Imperial Settlers (although I still have to try the nation-specific AI and the campaign there).