In the game you can help Martin Luther nailing his ninty-five theses to the door of the All Saints Church in Wittenberg. Each thesis is a level - but you have to be fast, because its getting harder each level. Some nails are helpful, some are not. Try to gather as much points as possible by hitting the most valuable nails!
In ninty-five levels you can discover the ninty-five thesis of Martin Luther, that changed the world in October 1517. They were the beginning of the reformation. They advance Luthers positions against what he saw as abusive practices by preachers selling plenary indulgences, which were certificates which would reduce the temporal punishment for sins committed by the purchaser or their loved ones in purgatory.
By finishing a level you can read the next thesis. It starts with easy nails, but soon it gets harder and new nails are added: nails, that need more hits, nails with higher points, moving nails, that are harder to hit, nails that create fog or rain, and many more. How far will you make it?
If you are registered in game center, your score will be listed, so that you can compete with other players.