From the back of the game tuck box:

Kings Keep is an exciting game for 2-8 Players. Having a medieval setting, players wrestle over lands, form alliances, trade for vitally needed cards and go for full-on conquest.

Having an arsenal of potent cards at your fingertips, utilize your army, gain intelligence, hold your defensive line and do all that you can to be standing at the end. Kings Keep has an intriguing table top game play with...

Defensive Lines: These are your troops that are ready to protect your land and engage the enemy...

Land: Your land cards are the very thing that you are trying to protect.

Hand: Your hand consists of your army in reserve...