Unholy Flesh is a horror text adventure game, where you type in commands to explore the world around and see if you can escape. In-game tutorial is pretty much detailed and it will give you everything you need, from basic 'look around' commands to more complex things. Such text-based games used to be very common in the old days, when computers didn't have such powerful graphic cards and monitors as they do now. To compensate that, people used to rely more on their imagination, which is not that bad after all. Today, such games are popular only among the smaller group of text game enthusiasts. In this game you play a role of a man who couldn't remember where, how and when he got there, but started to investigate things and look around to see if he could find the way out. Check the walkthrough from YouTube if you get stuck.