Battlestrike: The Siege is practically the same game as its predecessor Battlestrike: The Road to Berlin. It is a rail shooter where the player takes the part of an American WWII soldier.
In the 12 missions the player sits in various positions, e.g. as sniper or soldier, but this makes practically no difference. The player is stationary and is only able to move his view from left to right (depending on the mission between just a bit and 360°). His goal is to shoot everything hostile in sight. Rapid fire is not advisable because eventually the gun overheats and needs a cool-down period. Red arrows show the position of enemies which are currently out of view. The only innovation to Road to Berlin is a mission where the player sits on a boat, but the gameplay is the same otherwise.
An exception are the flight missions because there the player has full control over his plane. With the mouse he directly controls its movements. The goal is still to kill everything.