Minecave

In Minecave you are trying to find the most valuable ore; the red diamond. To reach it you need to mine other ores, sell them at the store to upgrade your tool. Each tool upgrade gives you access to a lower ground level. 

Keep an eye on your oxygen and play smart by placing ladders to be able to come up for air often.

Loosely inspired by Minecraft, obviously.

Originally MineCave was written in Commodore 64 BASIC on a real C64. The game was created as part of a challenge for the YouTube channel RetroGameCouch. It has since been updated and improved in C64 Studio and compiled with BOSS Compiler.