This is a concept of playing card size pop-ups, with a pull tab that activates the card and also locks the centerfold so it stays flat on the table. Without a lock, the card will easily close by itself because of the tension in the mechanism. The lock self is hidden inside the double-layered cover.
I would like to make a set so I’m working on more ideas that could be useful for more playing terrain cards. I'm working on the lock mechanism to finetune it and make it strong enough so you can not force shut it. Right now I have made an Inn, mountain, and a bridge card. More coming soon!
The video below will demonstrate how the lock works and what the cards look like together as a set. You will find more detailed videos on my PaperPaul Youtube channel.