Open the Messages app on your iPhone or iPad
Start a conversation or open an existing one
Tap the App Store icon next to the text field
Search for an iMessage game app
Download the game from the App Store
Open the game from the iMessage app drawer
Send a game invite to the person in the chat
Wait for the other person to accept and take their turn
Play by tapping and sending your moves in the conversation
Continue taking turns until the game ends
Use the same game app to start new matches later