Cave Digger 2: Dig Harder

It seems The New Frontier guards it's secrets well, and it's your turn to explore, rookie. Time to blow off the dust on your trusty pickaxe and get down to the mines. Incredible treasures are just waiting around for you to go dig 'em up, so be sure to make the best use of all the miner's tools lying around. However, you better look out for those nasty creatures lurking in the dark caves so make sure to carry some firepower with you. A VR adventure game taking place in an alternative, weird west dieselpunk world. The player is a penniless but adventurous prospector in the wild northern region known only as "The New Frontier". As the player excavates the mountains of their claim, they encounter many mysteries along the way as they mine and fight their way through various unique biomes. — MetaCritic