Cards Undead is a zombie survival card game that combines the elements of a survival game and a card game. Players' survivability will be tested by good decision-making, planning, wise resource management, and a little bit of luck.

This zombie card game focuses on loot runs, fighting-off zombies, real-life event choices, progressive levels, earning achievements, building deck, and much more. The more the player grind the more reward there is to acquire.

Players can also compete with other players called 'survivors' on an online leaderboard. Rank is calculated by how long the player can stay alive which is determined by how many days had ed and how many zombies were killed.