You are the archer on the gatehouse tower. Raiders are marching across the field to smash down your castle gate. Shoot them before they reach it! Survive seven waves.
On a computer: click the game to capture the mouse and aim with it. Hold the left mouse button to draw the bow and let go to loose an arrow. A longer draw means a faster, flatter arrow. Press E for an exploding fire arrow that hits a group.
On a phone: drag the right side of the screen to aim. Hold DRAW and let go to shoot, and tap FIRE for an exploding arrow. Your aim is nudged towards the nearest raider.
Arrows drop as they fly, so aim a little above far away targets. Headshots do double damage. Fast runners and big armoured brutes join later waves.