Virtual Hide and Seek
You have a chat group together with the other person you're playing with. Drop a pin where you are into the chat at the beginning of the game. Then set a timer for 30 minutes and go somewhere nearby. Every 5 minutes you have to send a panorama photo of where you are to the group chat. At the 30 min mark they drop a pin in the chat on maps that is where they think you are. When they 'tag' you by correctly guessing where you are to within 10 metres, you swap and they go hide.