Uncompleted gamez in a Journey are automatically saved for you to resume later. For example, if you play Pebblez game Adalena and quit before completing it, you will be asked if you'd like to resume it when returning to that game in the Journey. If you choose to start a new one then (instead of resuming the existing one), then the original one will be replaced with the new one.
You can indefinitely save a Practice game or a Journey game "as is" anytime. While you're playing the game, tap the menu icon, and then choose "Save [Game Type]". Choose a logical name for your saved game that will help you identify it later. While you can save a game as many timez as you'd like (i.e., just generated, partially completed, almost completed, etc.) for practice, once a Journey game has been saved, it will no longer be resumable if exited, and the saved gamez don't count towards the Journey.
Now that you've saved a game for practice, resume it by tapping Saved Gamez near the bottom of the home screen, and choosing a game.
Click the red X next to a game to permanently delete the saved game.
Want to send a specific gameboard to someone else? This capability is coming soon, so stay tuned!