Free on Steam for 24 hours (claim it to keep it.) Includes cards: 3/6.
To claim the freebie: Click "Install Game" on the game's page and it will be added to your Steam account.
About Kingdom: Classic: Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic. Play the role of a king or queen atop their horse and enter a procedurally generated realm primed to sustain a kingdom, then toss gold to peasants and turn them into your loyal subjects in order to make your kingdom flourish. Protect your domain at night from the greedy creatures looking to steal your coins and crown, and explore the nearby, mysterious forests to discover curious and cryptic artifacts to aid your kingdom.