🐞 Campaign · Merge Strategy

Bug Swarm Bastion

Merge auto-firing shooters and defend a garden overrun by bugs. Free, no download.

How to play

• Tap an empty grid slot to buy a level-1 shooter (costs coins).
• Drag one shooter onto another of the SAME level to fuse a stronger one.
• Shooters auto-fire up their lanes — keep every lane covered.
• Spend coins from kills and wave bonuses to keep merging up.

Why you'll play it

• Campaign mode — clear a fixed run of waves with a boss finale.
• 6×3 merge grid with up to 10 fusion levels.
• Bug Swarm theme: a garden overrun by bugs.
• Auto-firing lane defence, coin economy, boss waves every fifth round, infinite scaling.

One quick tip

Survive to the final boss wave to win the map. Merge aggressively, cover every lane and focus the boss waves.

Ready?

Survive to the final boss wave to win the map.