There should be additional audio logs you can find under some squares that provide snippits of backstory.

This is minesweeper 33. I'n out sweeping mines and I ran across one that looks different than the others. I'll keep investigating while mine sweeping. I'm recording this 30 second clip onto an entire recording device with a 64gb SD card. I'll leave it on this rock for others to find. Don't worry, I have 11 other devices to record my short messages. Wait, the mine, it's glowing! I can't--