Mastering TCG Card Shop Simulator takes some time. Early on, it is all too easy to make simple mistakes like overstocking items or hiring slow-moving staff members. Thankfully, one thing that is relatively easy during the early stages of the game is selecting which units to purchase. This is because the player is limited as to what units are available. That said, as they progress and begin unlocking new units, the player will need to start making decisions as to which units they want to have displaying their stock.