Tournament blackjack differs from cash game blackjack in structure and strategy. In tournaments, players compete for a set amount of chips within a limited number of rounds, focusing on accumulating the most chips relative to others. This creates unique strategic considerations. In contrast, cash games involve real money stakes, allowing players to enter and leave at will, with chips representing actual currency. This leads to a focus on individual chip management and personal risk, as players can adjust their strategies based on their bankroll.