In CS:GO competitive matches, there are 30 regular rounds in total. Each team plays 15 rounds on both the Counter-Terrorist (CT) and Terrorist (T) sides. The first team to win 16 rounds wins the match.

If both teams reach 15 rounds each (15-15 score), the game goes into overtime. Overtime consists of 6 additional rounds, with teams playing 3 rounds on each side. The first team to win 4 rounds in overtime wins the match. If the overtime ends in a tie, another overtime period begins until a winner is determined.

Here's a quick breakdown of CS:GO rounds: • Regular match: 30 rounds • Rounds needed to win: 16 • Rounds per side: 15 • Overtime rounds: 6 (if needed) • Overtime win condition: First to 4 rounds

In casual game modes, the round structure is different: • Casual matches: 15 rounds total • Rounds needed to win: 8 • Rounds per side: 7-8 • No overtime

Each round in competitive CS:GO lasts 1 minute and 55 seconds, with a 15-second buy period at the start. If neither team completes their objective (planting/defusing the bomb or eliminating the enemy team), the round winner is determined by the side's default objective - Terrorists lose if they don't plant the bomb, Counter-Terrorists win by running down the clock.

For professional tournaments and leagues, this standard round format remains the same, though some tournaments may use different overtime rules.