Besides finding clues and closing cases Project Blue Book: Hidden Mysteries also offers a fun way of building up passive and active boosts throughout your gaming experience by the collection of cards. These cards, if used correctly, can greatly improve a variety of different aspects of the game.
As of the latest version of Project Blue Book: Hidden Mysteries you are now able to collect a total of 19 cards (more cards are continuesly added to the game) which in turn can be used to improve different aspects of the game. These include gain/boost your coffee, plausible deniability increases, timer increase/decrease and much more!
So make sure to check out the card section in the main menu!
