Merge Line: Boss Defense

🛡️ Game Overview

This is a casual puzzle game that blends Tetris-style block placement with defense strategy.
Before enemies arrive, you must strategically place blocks made up of 4 soldiers to build a solid defense line and protect your wall!

🧩 Core Gameplay
Block Placement

Before each enemy wave arrives, you are given a chance to place blocks.
Blocks are inspired by classic Tetris shapes and can be freely rotated and positioned.

Automatic Soldier Charge

Once a block is placed, the soldiers will automatically charge forward,
stopping at the front line to join the defensive formation.

Full Row Upgrade Mechanic

When an entire row of soldiers is filled:

The soldiers in that row are instantly upgraded

Attack power, defense, and other stats are significantly increased

Smart positioning is the key to victory!

👾 Enemy Waves

Enemies attack in continuous waves

Each wave features different enemy types, strengths, and numbers

Only by constantly upgrading and defending can you survive until the end

🏆 Victory Conditions

Successfully defend until the target number of enemy waves

Hold the wall and claim victory!

✨ Game Features

🧱 Tetris-style block placement — easy to learn, rich in strategy

⚔️ Full-row upgrade system — satisfying power growth

🧠 Light strategy + casual defense — perfect for quick play sessions

⏱️ Fast-paced gameplay — every wave brings new choices