3 Keys Solitaire is a free-to-play tripeaks type of solitaire card game. Click/tap on cards on the tableau that are 1 higher or 1 lower then the open card(s) top right. Play 3 Keys Solitaire in full screen mode by clicking FULLSCREEN button. Click on the stack (top left) to get a new open card. Unlock extra foundation spots with the key cards. You can play 3 Keys Solitaire both on a mobile device and a desktop computer.