Deep Drill Idle is a mining idle game that plays itself. There is no home screen: the page loads and the bit is already turning. Every metre it cuts pays ore, ore is the only thing you spend, and there is no timer, no lives and no way to lose — the well keeps producing while you read the panel, and it keeps paying while the tab is closed. Twelve rig tracks are what you spend it on: a bigger bit for speed, coolant to cut the rock's hardness, a wi ...
Mouse or touch — the drill descends by itself, so every input is a purchase. Rig: press a row's price key to buy a level; the mode key switches between Buy x1 and Buy max, which spends the whole affordable ladder at once. Cores: spend the cores a sealed well paid out on twelve permanent nodes. They survive every future seal. Surge: x3 ore for eight minutes. Salvage: seal the well — depth, ore and rig levels reset and your deepest point pays out cores. Goal: get deeper. There is no time limit and no way to lose, and time offline keeps paying ore within your night shift's window.