Digging Master is an idle mining game: you dig downward collecting ores, sell them, and buy upgrades that let you dig faster and reach deeper layers where the valuable material is.
The loop is well-tuned — every upgrade visibly changes how deep a run gets, and the deeper layers hold materials that make the next upgrade affordable.
Upgrade dig speed and durability. Depth is gated by how long your equipment lasts, and the deeper layers hold the materials that pay for the next upgrade.
Carrying capacity — a full bag forces you back to the surface long before your equipment gives out, so capacity is usually the real limit early on.
Yes — drag to dig. Nothing to install.