The last bunker stands on a contaminated planet.
Develop skills, merge them, and deploy units to defend against monsters attacking from every direction.

■ Random Skill Development
Skills are generated randomly during battle.
Use Pyro, Frost, and Electro skills to fend off the incoming monsters.

■ Merge to Grow Stronger
Merge skills of the same tier to obtain higher-tier skills.
Even low-tier skills can become powerful combat resources through merging.

■ Complete Combinations to Deploy Units
Each unit requires a different skill combination.
Complete the required combination to deploy powerful units that will join the battlefield and help defend the bunker.

■ Endless Waves
The monsters never stop.
Repeat skill generation, merging, and unit deployment to survive increasingly intense attacks.

■ Grow After Battle
Use battle rewards to upgrade your units and skills.
Return with stronger forces and break through higher waves than before.

Craft randomly, merge smartly,
and summon units with the right combinations.

Start defending your bunker now!

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