An Intel Core i5-4590 CPU is required at a minimum to run Cave Digger. The cheapest graphics card you can play it on is an NVIDIA GeForce GTX 970. Cave Digger system requirements state that you will need at least 8 GB of RAM. In terms of game file size, you will need at least 400 MB of free disk space available.
Cave Digger will run on PC system with Windows 10 and upwards.