"Coin Digger" is an engaging dungeon exploration game where you play as a pickaxe-wielding old man on a quest for treasure. Navigate through grid-based caves, breaking rocks and collecting coins. Each block requires multiple hits to clear, with different pickaxes enhancing your ability. Your goal: find the treasure worth 50 coins to progress to the next level. Simple controls, strategic gameplay, and exciting treasure hunts make "Coin Digger" an addictive adventure for all.

Control the old man's movements and actions using arrow keys to move up, down, left, or right. With each press of an arrow, he takes a step and swings his pickaxe in that direction, breaking through the rock barriers that stand in his way. The cave is laid out on a grid, with each block of rock requiring a specific number of hits to break - four hits for a simple pickaxe, three for a reinforced one, and so forth.

As you chip away at the blocks, coins are collected - each block destroyed gives one coin, tallying up in a counter at the corner of the screen. Your primary goal is to cleverly navigate the grid and locate the hidden treasure in each level, which rewards you with a bounty of 50 coins. Successfully finding the treasure unlocks the next level, offering new challenges and more intricate cave layouts.