Use the arrow keys to move, use wasd to select the direction you mine in, 'm' to mine, and 'b' to place a bomb. you need to buy keys to go deeper underground. Any and all upgrades and items you would need to buy can be found in the shop. Touch the chest and press 't' to clear your inventory, and click the pickaxe to sell everything in the chest. The NEW Mega Miner expansion pack inculdes a whole heap of new things, including: - a new area to explore. - 3 new ores to mine. - An improved shop. - Achievements/easter eggs. - And so much more! Still in development, game may be subject to lag, bugs, and a lack of content. We are trying our best, considering we aren't getting paid.