I was really bored yesterday and found this game, you should give it a try if you have nothing to do, it's actually pretty fun. and its free

"Dig-N-Rig is a 2D, futuristic, mining simulator that combines resource management with creative building mechanics. Dig-N-Rig takes place in the year 2032, when a team of scientists decide to explore the Earth's final frontier, the core. The player plays as the Diggit 6400, the world's most advanced mining robot. As the player mines, they extract powerful minerals from the Earth and transport them up to their Lab via a custom-built rig system. As the minerals reach the Lab, they are refined into malleable elements. Elements are then used by the player to purchase more rig pieces, upgrades, and items. Along the way, the player will discover rare fossils, encounter ferocious moles, and reach the center of the Earth!"