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The free online flight game Boss Slayer is a fun and fast shoot em up game challenging the player to slay 10 space bosses. Buy upgrades between each attempt to unlock the full firepower potential of the spaceship. Addictive game, that takes about 10-15 minutes to win. Use the mouse cursor to move the ship. Left mouse button to fire. Have fun playing the cool flight-shooting game Boss Slayer!
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