Terrorists: Plant and detonate the bomb, OR eliminate all CTs; Counter-Terrorists: Defuse a planted bomb, eliminate all Ts, OR let the round timer expire; First team to 13 rounds wins the map (MR12)
Why people argue about this
People often argue that if a match ends in a 12-12 tie after 13 rounds, they automatically win just by virtue of having more rounds played, which is incorrect. The confusion arises because the official rule specifies overtime at 6 rounds per side, not just continuing to play until one team reaches 13 wins, ensuring fairness and preventing teams from coasting to a win through sheer round count.