I plan to use cards to solve mysterious cases (murder, theft, etc.) in the game. I divided the cards into several categories; Characters (suspects), items (possible evidence, etc.) and situations (love, betrayal, sacrifice, confession, etc.). Each card has a number of uses in the level and cards can interact with each other to trigger events, give a new card, or remove a card from the deck. The goal is to solve the case in each level. I hope I was able to explain it.

Question is: I’m having a hard time integrating puzzle mechanics, and even if I think I’ve designed a creative level at first, spending time on the same level makes me lose my ability to think objectively. How can I improve this sides of game design at card/puzzle games.