Games Like Merge Army：World war

Bag Merge: Zombie Battle is a casual, portrait-oriented auto-battler where players merge items to create stronger units. The game features a loot-driven progression system and short, interruptible sessions. Some players feel its monetization can be a significant factor in player experience.

Survival Arena: Tower Defense is a real-time strategy game where players build and upgrade defenses to survive waves of enemies. The game emphasizes cooperative play and strategic placement of towers to overcome increasingly difficult challenges. Progression often requires significant time investment and resource management to unlock new abilities and units.

Merge Legions is a casual auto-battler where players merge units to create stronger armies. The core gameplay involves strategic unit placement and merging to overcome waves of enemies. It offers a simple, idle-style experience suitable for short, interruptible play sessions.