Random CS2 Map Picker

How to use

1. Leave Active Duty on for the seven competitive maps, add Reserve if your group plays Office, Italy or Overpass nights too.
2. Press Pick — the map name and its pool appear in the box.
3. For a series keep No repeats on and press Pick three (Bo3) or five (Bo5) times; the history strip becomes your map order.
4. Pick for 5 draws five different maps at once if you want a full evening scheduled in one click.
5. Refresh the page to reset the history and start a new veto.

The CS2 map pool in September 2026

"Active Duty" is Valve's name for the seven-map pool used in Premier mode and by tournament organizers. Reserve maps can be queued in the Competitive mode but do not appear in Premier. Valve rotates the pool roughly once a year around the Premier season change; when it does, this list is updated and the date at the top of the file changes.

Random map vs. a proper veto

Pro matches do not roll maps — they veto. In a best-of-3 each team bans two maps in turn, picks one, and the last remaining map is the decider. The random picker is for everything a veto is too slow for:

• 10-man customs where nobody wants to be the captain who "always picks Mirage".
• Practice sessions: a random Active Duty map each day forces you to keep nades for all seven, not just the two you like.
• Scrims when both teams are fine with anything and just want to start.
• Streams and challenges: "random map, random weapon", the map half is here.

Hybrid that works well for a 10-man: each captain bans one map by hand, then roll from the remaining five. Fast, and the two maps the lobby truly hates are gone.

How the pick is made

The map is drawn with crypto.getRandomValues and rejection sampling, so with the Active Duty filter each of the seven maps has exactly a 1-in-7 chance (14.3%), and with both pools on each of the 15 maps has 1-in-15. "No repeats" is a shuffled queue, so a Bo3 drawn with it is three different maps in random order — the same result as drawing three balls from a bag without putting them back. There is no bias toward Mirage or Dust II, no matter how much your lobby suspects it.

What makes ours different

• The pool is the real 2026 competitive list, split into Active Duty and Reserve, with the change dates shown — not a CS:GO-era list with Cobblestone still in it.
• No-repeats mode builds a Bo3/Bo5 order in seconds.
• Cryptographic randomness, visible history, and no ads over the Pick button.
• Works on a phone in the lobby; no login, nothing to install.

Privacy

The map list is part of the page and the draw runs in your browser. Nothing is sent to a server when you pick, and nothing is stored beyond the on-screen history.

FAQ