CS2 Rules Explained: A Beginner's Guide to Competitive Counter-Strike
This guide covers the rules you need to follow a pro match. Each section links to a deeper guide if you want more.
Two sides: T and CT
Every round, one team plays as Terrorists (T) and the other as Counter-Terrorists (CT).
- T side wins by planting the bomb at one of two bombsites and letting it explode, or by eliminating all five CTs.
- CT side wins by eliminating all five Ts before the bomb is planted, defusing the bomb, or keeping the Ts from planting until time runs out.
The teams swap sides at halftime, so both play attack and defense. Some maps favor one side more than the other, which is part of why map veto matters.
One life per round
There is no respawning. If you die, you watch your teammates for the rest of the round. That is why a 1v3 situation, a clutch, is such a big moment.
How long a round lasts
A round lasts up to 1 minute 55 seconds. Once the bomb is planted, the clock switches to a 40-second bomb timer. Defusing takes 10 seconds, or 5 seconds with a defuse kit. More in How Long Is a Round in CS2?
How many rounds make a map
CS2 uses the MR12 format: 12 rounds per half, 24 in total, and the first team to 13 wins. At 12-12, pro matches go to overtime. Full breakdown in How Many Rounds Are in CS2?
Money decides what you can buy
At the start of each round there is a short buy phase. Players spend money earned in earlier rounds on weapons, armor and grenades. Win rounds and you can afford rifles; lose a few and you may have to save. Each half starts with only $800, which is why round 1 is called the pistol round.
This money system is the reason teams sometimes play a round with cheap weapons on purpose. See CS2 Economy Explained and the eco entry in our glossary.
How pro matches are structured
A pro match is a series of maps:
- BO1: one map, common in early tournament stages.
- BO3: first to two maps, the standard for most important matches.
- BO5: first to three maps, usually only for grand finals.
Before the series, teams remove and pick maps from the seven-map Active Duty pool. That process is called the map veto. More on formats in BO1 vs BO3 vs BO5.
How long a match takes
A single map in a pro match usually takes 40 to 60 minutes with timeouts and breaks. A BO3 can run for 2 to 3 hours. See How Long Is a CS2 Match?
Where to go next
Now that you know the basics, open today's matches and pick one. Each match page shows both teams' form and their head-to-head record, so you know what to watch for. If you need a stream, see Where to Watch CS2 Tournaments.
FAQ
How do you win a game of CS2?
A team wins a map by winning 13 rounds. In pro matches, a series is usually best of one or best of three maps, so you need to win one or two maps.
What is the difference between T and CT in CS2?
Terrorists (T) attack and try to plant and detonate the bomb. Counter-Terrorists (CT) defend the two bombsites, and win if they stop the plant, defuse the bomb or run down the clock.
Do players respawn in CS2?
No. In competitive CS2 a player who dies sits out the rest of the round and comes back at the start of the next one.
Related guides
How Long Is a Round in CS2?A CS2 round lasts up to 1:55. After a plant, the 40-second bomb timer takes over, so a round can run past two minutes. Freeze time and defuse explained.
How Many Rounds Are in CS2? MR12 ExplainedCS2 uses MR12: 12 rounds per half, up to 24 in regulation, and the first team to 13 wins. What happens at 12-12 in Competitive, Premier and pro matches.
CS2 Economy Explained: Money, Loss Bonus and Buy RoundsHow money works in CS2: $800 to start each half, $3,250 for a round win, a loss bonus from $1,400 to $3,400, kill rewards by weapon and the $16,000 cap.
Map Veto in CS2 Explained: How Teams Pick and Ban MapsBefore a CS2 series, teams remove and pick maps from the 7-map pool. How the veto works in BO1 and BO3, what a decider is and who chooses sides.
BO1 vs BO3 vs BO5: Match Formats in CS2BO1 is one map, BO3 is first to two maps, BO5 is first to three. What each CS2 format means, where tournaments use them and why upsets happen more in BO1.
EcoAn eco round is when a CS2 team spends little or nothing to save money for a full buy next round. What it means, when teams do it and why it works.
MR12MR12 means max rounds 12: in CS2 each half has 12 rounds, a map has up to 24, and the first team to 13 wins. How it differs from CS:GO's MR15 format.
ClutchA clutch in CS2 is when the last player alive on a team wins the round against one or more opponents. What 1v2 or 1v3 means and why clutches matter.
Veto (map veto)The veto is the pick and ban process before a CS2 series: teams remove and choose maps from the 7-map pool. Bans, picks and the decider in a few lines.
Sources
Reviewed by the R1GG team