Defend the Lab (保卫实验室)

Defend the Lab is a four-player cooperative endless tower defense game where you must safeguard a high-tech laboratory as waves of enemies advance along rotating lanes. Teamwork, quick decisions, and precise timing are the keys to survival.

Core Mechanics

• Co-op Play: Form a squad of up to four players to coordinate defenses, share resources, and adapt to changing threats.
• Rotating Lanes: The battle lanes rotate and shift, forcing you to rethink tower placements and line up reliable defenses as the map evolves.
• Tower Selection: Choose from a wide variety of towers, each with distinct roles and upgrade options to fit your strategic plan.
• Powerful Items: Equip potent items that enhance tower performance and boost overall defensive capabilities, tipping the balance in tight moments.
• Endless Challenge, Finite Waves: Survive 50 waves of escalating enemy force, including four mini-bosses and one formidable final boss, across five difficulty levels.
• Five Difficulty Levels: Tailor the challenge from accessible to hardcore to extend replayability and test coordination under pressure.

What Makes It Engaging

The rotating lanes create dynamic firefights where no two runs feel the same. You’ll need to balance immediate defense with long-term planning, timing item activations for maximum impact, and coordinating with teammates to handle swarms, skirmishers, and heavy hitters.

Each run emphasizes strategic placement, resource management, and synergistic use of towers and items. As waves intensify and bosses appear, your team’s communication and adaptability become the deciding factor between a triumph and a retreat.

Defend the Lab rewards cooperative play and tactical thinking. Pick your approach, align with teammates, and push your way through rotating pathways to protect the facility across challenging waves and relentless bosses.