The Binding of Isaac
An arcade game with a dark theme, boss fights, and many power ups.
Overview
I've played a lot of arcade games in my life. They can be fun, but small innovations aren't enough to keep me interested in the genre as a whole.
The Binding of Isaac isn't fundamentally different from any twin stick shooter, like Robotron. Since I basically have negative feelings about the game, let's go over what it's good at:
Theme
The dark humor theme is unique but it isn't engaging in a significant way. Even if you think tampon weapons and aborted fetus monsters are funny, it's a quick laugh at best. One episode of South Park has more irreverent humor than this entire game.
Powerups
While powerups are nothing new in the action genre, The Binding of Isaac has a whole lot of them with a large variety of effects.
Boss Fights
There are a fair number of bosses to fight to keep the game interesting. How you beat them can be influenced by the powerups you have.
The Bad
There is nothing specifically bad about the game. I personally don't like the feel of the action. The hitboxes are unclear, movement is a little too fast and awkward. Your shots have a weird type of momentum. I don't care for the theme.
But all of that is subjective. What damns the game to me is that I have more fun playing free flash games or iphone games than I do playing The Binding of Isaac. There are a million games out there to let me mindlessly shoot things. The only thing Isaac has going for it is a cult following that exploded into a pop-culture phenomenon.
Should You Buy It?
If all your friends play it and you want to talk "strategy" with them, then yes. If you want to play the best action game out there, then skip it. If you just want to shoot monsters, go find something free to play.