Depth of Debts Story: After your grandfather died unable to repay his debts, the burden fell on you. When you couldn't pay either, you were thrown into an abandoned debtor's mine-prison - where your only path to freedom is mining enough resources to cover the debt.

🔄 Core Mechanics:

• Dig through collapses with your shovel (upgradable)
• Manage oxygen levels (limited air in collapsed tunnels)
• Haul resources in your backpack (upgradable capacity)
• Spend wisely between debt payments and survival upgrades

Progression System: ⚙️ Upgrades:

• Shovel (digging speed/efficiency)
• Backpack (carry more per trip)
• Stamina (longer digging sessions)
• Lung capacity (more time without oxygen)