Defend Your Castle is an action-packed game that puts you in the role of a ruler who must defend their castle against hordes of crayon invaders. The game is developed by XGen Studios and is available for Windows.

In the game, you must battle different types of enemy invaders, each requiring varying tactics to defeat. As you progress, you can upgrade your kingdom by building fortified walls, an archery range, a wizard tower, a craftsmen's workshop, and a demolition laboratory. You can also convert soldiers and assign them as archers, wizards, or craftsmen to work within your castle or deploy them as bombers. With the aid of your wizards, you can cast powerful spells to defeat your enemies.