2. Mini games within the main game in order to gain the memories
To make the memories something the user needs to win, I thought it would be a good idea to make the player have to play a mini game and win in order to unlock the memory. This mechanic would make the game more stimulating for the player and include more levels to it that would appeal to more advanced players of the game. Some mini game ideas include swipe to match games, noughts and crosses and other basic games that everyone knows how to intuitively play.
3. Sidekick character
I thought that it would be nice to maybe make it either a multiplayer game or perhaps have a side character with the dog that the player could interact with and perhaps control as well? This character would be another animal such as the sketch below and can aid the dog while trying to find the memories. While the penguin wouldn’t have any direct evolvement with the plot and the memories it would serve as a comfort character for the player whilst alone. Perhaps it could trigger the first few memories.