Mine, merge, automate! Start from a single ore vein, collect resources, merge to upgrade, unlock powerful machinery, and build your underground industrial empire step by step. Every merge multiplies your profits, and every upgrade boosts efficiency. Plan compact production chains wisely to make the most of every inch of space. Automation takes over the grind — even offline, your factory keeps running. From a pickaxe to a massive industrial complex, your empire, built by your own hands.Five Core FeaturesMine & Merge, Upgrade Step by StepStart with basic ores and merge identical resources into higher-tier materials. Each merge doubles the value, transforming raw fragments into rare and advanced resources.Build Compact Production ChainsStrategically plan your cave layout to connect mining, merging, and processing into smooth, efficient production lines. Every link matters — true mining masters optimize every step.Unlock Powerful MachineryProgress from a simple pickaxe to heavy-duty mining equipment. Unlock and upgrade your machine arsenal — stronger gear means faster extraction and higher output, making your cave roar with productivity.Automated Operation, Hands-FreeHand over repetitive mining and merging tasks to the automation system. Once your production lines are set, machines run continuously — generating resources even while you're offline.Expand Your Cave into a Mining FactoryStart from a single vein and keep digging outward. Transform your cave into a vast underground industrial base. Every new tunnel opens up a new frontier for production.