Do not merge just because you can
A merge that leaves your line empty is a bad trade. Only combine units when you can afford the brief gap in coverage.
MERGE · ARMY TOWER DEFENSE
Merge Defense:
Army Behind the Wall
Merge your soldiers into stronger units, drop them behind the wall, and let the formation hold the line while the enemy works through your ranks.
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PLAY THE GAME
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GAME OVERVIEW
Build the army before the wall breaks.
Merge Defense combines the satisfaction of a merge puzzle with a lane defense. Units spawn on your side of the wall and can be dragged together to produce a stronger unit, so your economy is also your army.
That shared resource makes timing the core decision. Merging early gives you a tough unit sooner; merging late gives you a much stronger one but leaves the line thin in the meantime.
Placement matters as much as the merge itself. Strong units sitting behind weak ones waste their range, while a spread formation absorbs the early pushes without spending your best troop on the first contact.
HOW TO PLAY
01 / MERGE WITH INTENT
Put strong units in back
Your toughest unit should be the last thing the enemy reaches, not the first. Put fodder in front and elites behind it.
Cover the flanks
Enemies often leak around the obvious entry point. Keep at least one unit angled at each side so a single breach does not end the run.
Controls
- Drag a unit onto another of the same tier to merge them into a stronger unit.
- Drag units onto open ground to reposition your formation.
- Use the in-game buttons to queue the next wave or buy new units.
- Fullscreen helps when the formation grows crowded.
Enemies often leak around the obvious entry point. Keep at least one unit angled at each side so a single breach does not end the run.
FAQ
Before you play.
How does merging work? +
Combining two units of the same tier produces one unit of the next tier up. The cost is that both units are no longer on the field.
Should I merge immediately? +
Not always. Merge when the gap in your line is covered, not simply because a pair is available.
Is this the original release? +
This page embeds a single-player browser build. Content may differ from other releases of the same game.
What if the game does not load? +
Allow a few seconds for the frame to boot. If it stays blank, refresh once or use “Open in new tab.”