1. Open osu!lazer and choose a PoolRotater lobby matching your mode and preferred difficulty.
2. Use Join on the homepage, Join a lobby in the bar at the top, or the current Discord status card. Join opens the current room in lazer; Open in browser offers launcher help and an official multiplayer link if the game does not open.
3. Download or import the selected beatmap. Ready up when you can play.
4. If you join during a match, read the bot's remaining-time message and wait for the next map.
5. Play the round. After completion, use .good, .bad, or .ok to give feedback.

Use .start to request the normal countdown, .wait when you need a little more time, and .queue to see upcoming maps. If you are the only player, ready up for automatic starting; you can also explicitly request .start.

Commands go in lobby chat with a leading dot. Most voting and Mania selection controls require you to be an actual gameplay participant. Spectators do not count as players. See using commands and countdown help.

Follow practical session examples or the Mania style walkthrough. Find a command by name, alias, purpose, or lobby mode in the command reference.