Being a board game, this is a multiplayer game. You can play with 2 to 4 players. You can only have up to 2 cpus so when playing single player the maximum is 3 players. Who the player chooses to play as is a personal preference and has no effect on gameplay. However, if you play using computer opponents, who you chooses does matter. Computer opponents have different ratings and different “powers”. You can play 3 years for a quick game with friends (where you start with more money and some cards), you can do a 10 year challenge to try to get in the top rankings or you can play between 5 and 100 years of game time. The game will tell you how long the game will approximately take before you begin.