A playing card having a substrate entirely of a first predetermined colour overlaid with a removable surface coating entirely of a second predetermined colour contrasting with said first predetermined colour, said removable surface being sufficiently friable so as to be able to be scratched off by a player in a pattern predetermined by said player to reveal said substrate in said pattern. The scratched playing card uses the high contrasting colors (typically primary and secondary colors) to produce letters or image(s). These cards are interchangeably used in a strategic and non gambling card game often utilising the Stroop effect.

A playing card having a substrate entirely of a first predetermined colour overlaid with a removable surface coating entirely of a second predetermined colour contrasting with said first predetermined colour, said removable surface being sufficiently friable so as to be able to be scratched off by a player in a pattern predetermined by said player to reveal said substrate in said pattern. The scratched playing card uses the high contrasting colors (typically primary and secondary colors) to produce letters or image(s). These cards are interchangeably used in a strategic and non gambling card game often utilising the Stroop effect.