You have to overcome random dungeons while trying to flee the basement where you are hiding from your mother who intends to sacrifice you to God. The Binding of Isaac: Afterbirth keep the basics and the style of the original game.
Look, I know I just slipped in another subheading, but really I am still listing features features: secret transformations, more achievements, secrets of all kinds for the new playable character Lilith, four alternate chapters, even more bosses, and in the developer’s words ' more than five functions cannot remember because we are adding so many new things'. These includes dailies, online rankings, 10 different challenges over a thousand different randomly seeded rooms, a monstrous combo upgrade system. While that may seem like a fairly standard expansion, The Binding of Isaac: Afterbirth includes plenty of other content to keep you regularly checking in.