Steps
Open t.me/PickBotGameBot on your phone or computer. It opens in the Telegram app.
Tap Start.
Tap the button to open the game. It opens as a Telegram Mini App inside Telegram.
The first time, choose a display name. See Display names and your Telegram identity in the Community Game.
Tips
Use the Telegram mobile app or desktop app. Telegram Web in a browser may not load the game.
Your Telegram account is your game account. You don't need a separate password.