Mainz, Germany, 1455. Johannes Gutenberg, creator of the printing press, completed his great masterpiece: a printed Bible. Thus, a new era in human development would ensue where scribes were no longer needed to painstakingly hand copy manuscripts. Gutenberg could now create thousands of copies of the Bible to be distributed throughout the world, making the Word of God easily available to any who sought it. With his press destroyed, and the Bible stolen, a Paladin is called upon to once again free the world of evil and return the Bible to Gutenberg. You are that Paladin in Ominous Horizons: A Paladin's Calling.

The gameplay is similar to a first person shooter although you can pick up certain items and use them at a later time. There is also some interaction with NPCs. You are empowered with a sword of the spirit that shoot holy energy to dispatch your enemies. The sword can be upgraded and there are two other weapons you can find along your adventures.