>>32866047Raids randomly appear at gyms. What appears at the gym is also random. There are three kinds of eggs that pop up on top of the gym tower, Pink, Yellow, and (community guess) Blue. Pink have class 1 and 2 bosses. Yellow have class 3 and 4 bosses. Blue (again, this is the community guess) have class 5, legendary bosses.
When the egg appears, there's a countdown timer of 2 hours. Once the timer gets to 0 the egg explodes and the boss is revealed. The boss sticks around for 1 hour. When you arrive, you can battle it at the cost of a raid pass. That buys you access to the boss until it expires. You can battle it (and lose) as many times as it takes until you can beat it.
If you're there with a group, have everyone join the raid "lobby" at the same instant to make sure they're all in your raid team. If the countdown timer in the lobby is less than 30 seconds, wait until that one has reached zero and re-enter. It should give you about two minutes to pick your teams.
cont