The Binding of Isaac is a popular Indie game*, and for good reason. The gameplay is simple yet challenging, there's a huge amount of content*, multiple endings* and nearly endless replayability. It's short enough to play through in one sitting, and no two games are going to send you through the same dungeon.
This is a twin stick shooter, meaning that you'll be moving Isaac around with WASD* while also aiming his attacks using the arrow keys*. The main benefit of this is that you can dodge enemy attacks from any direction while you focus on attacking in another. Most of the rooms feature monsters of some sort, and a good number of them can shoot at you, so coordinating your movements and attacks is a much needed skill.
In order to advance to another room, the current room need to be free of monsters. There's a chance that you'll be rewarded with bombs, keys, coins, or some other powerup* when you clear a room for the first time, so exploring can be rather useful.
Isaac's journey takes him through several floors. Each floor is a small maze, but you can be certain that every floor has a shop, a treasure room and at least one boss*. Once you've beaten the level's boss*, you're free to continue exploring the current floor or continue on deeper into the pit.
Unfortunately, what would otherwise be a quality game is buried under a lot of questionable content. There's a lot of blood, feces and gore for such a simple game, and if you take everything at face value, much of the game's story is a mockery of Christianity.
The end result is that I feel this game crosses too many lines for it to be found in a Christian home.