FireLine: Merge Defense is a free online game for boys. Unlock many firearms in your armory. Combine to strengthen your gun and adopt a defensive strategy against progressively stronger waves of cubes and lethal monsters. Invite your friends to join the game and don't forget to share the fun in this game with them. And if you love this game, you can play some other games similar to Stick Duel: Battle Hero. at Friv4school Unblocked. Spend time playing games and you will have more relaxing moments in your life.
Instruction to play: