FireLine: Merge Defense

Cubes stack up outside the base. In FireLine: Merge Defense, the perimeter guns never stop firing, and larger enemy blocks soak up far more damage than the early waves. Boss fights break that rhythm with massive health pools, so stronger hardware becomes part of survival long before the later levels arrive. The challenge rises from round to round, with tighter pressure on the wall and less room for weak firepower.

How to play?

On the grid below the base, drag matching cannons together to get a stronger turret that hits harder than the pieces used to make it. Around the outer edge, place machine guns where they can cover incoming lanes and redirect shots toward thicker groups when one side gets crowded. When a cube reaches the defense line, the run ends and the level resets, so spend upgrades on weapon stats between fights and trigger support boosts that raise fire rate and damage during heavy pushes. From the arsenal, add new futuristic guns that cut through dense formations faster and give you better odds against oversized targets.