About Merge Defense: Army Behind the Wall

Merge Defense: Army Behind the Wall puts your squad of shooters at the bottom of the screen while waves of monsters pour down from above. The core loop is straightforward and satisfying: buy warriors, merge identical ones to create stronger fighters, and hold the wall at all costs. Archers pick off single targets while mages blast several enemies at once, so positioning matters from the very first wave.

The journey carries you across a series of distinct worlds — swamp, ice, desert, mushroom forest, and more — each capped by a boss encounter. Crucially, your army and accumulated gold travel with you between worlds, so every merge decision compounds over the full run.

How to Play Merge Defense: Army Behind the Wall: Buy, Merge, and Survive Each Wave

Gold is the engine of everything. Spend it on new warriors, magic, and a stronger wall before each wave begins.

Building Your Army

• Purchase warriors with gold — they take up positions behind the wall.
• Merging two identical warriors is the only way to increase your army's strength; the pair becomes one more powerful fighter.
• Archers: strike a single enemy per shot.
• Mages: hit several enemies at once — place them where crowds cluster.

Running a Wave

• Press Start to launch the wave; your army fires automatically.
• Every enemy defeated earns gold, which funds further purchases and merges.
• Survive the wave, then use the downtime to buy and merge additional warriors before the next one begins.

Worlds and Bosses

• Travel through worlds including swamp, ice, desert, and mushroom forest.
• A boss waits at the end of each world; defeat it to advance.
• Your army and gold carry over between worlds — nothing resets on progression.
• If enemies break through the wall, the run ends in defeat.

Games You Might Like

If the merge-and-defend formula keeps you coming back, Merge Elementals: Castle Defense deepens the concept with twelve elemental tiers — fire, water, earth, and beyond — plus a spell system featuring fireball, frost storm, chain lightning, and meteor shower between waves. For a game that shares the same wall-protection tension with ten hero tiers including knights, archers, and wizards facing wolves, bats, shamans, and dragons, Merge Wall: Last Stand is a natural next stop. The broader merge games collection on Playgama covers the full range of merge mechanics across many settings, and the action games category is worth browsing if fast-paced combat and wave survival are what you're after.