So already there are two games that McMillen has revealed to contain exactly the theme of “the box” he wanted to assure in the final products. Aether describes a child already in the box, and Time Fcuk explores life thereafter extending indefinitely, but also touching on the possibility of escaping by expanding your viewpoint on life. Now, many people tend to look for very specific symbolism in every piece of the Binding of Isaac (hereafter referred to as BoI), but I believe the entire game is the metaphor, not just the individual items and monsters, although there are certainly some important things….
If you are thinking of the toy chest, then you’re onto where this is going. I’m going through a lot of Isaac, so I’ll just say **SPOILERS** here and not do it every time I bring up one of the thirteen endings. Binding of Isaac is about a child’s emotional journey towards deciding to get in the “box.” Many people try to decide what is “real” in BoI, and I think the game is indeed split physically and metaphorically.
The toy chest is the “box” metaphor, and the 11th ending is Isaac getting in. Sure, maybe this “really” happens in the game, but it is also symbolic of Isaac’s mind retracting from reality and into his “box.” Whether he physically gets in and actually dies there is (sadly) less important in my opinion, but it certainly tells the story of how Isaac physically hides in the chest to escape the physical threat of his mother.
Metaphorically, his mind creates an alternate reality to hide in to escape the emotional threats. The ??? Blue Baby could be either interpreted as physical death by asphyxiation or metaphoric death through detachment from reality; the actual character is Isaac’s dead body. It is named ??? because it is a glimpse of reality that Isaac’s fake world (where Judas, Eve, Cain, etc. all exist) doesn’t recognize. McMillen emphasizes how the game is open to interpretation and I’m trying to nail what his inspiration was for the overarching metaphor. The life events leading to Isaac getting in the box are what McMillen refers to as being open to interpretation in my opinion, through the items received and the Mom subplot.
The items received and the dreams Isaac has in between levels all depict things like child abuse, shame, and neglect. Most everything else has a religious connotation to it, and how Christianity fits in and makes sense. McMillen always said the game wasn’t meant to bash it, but rather to use it as a catalyst. Christianity is based around an idea that mankind is naturally sinful. In an impressionable, already fractured mind, this leads to believing one is unconditionally sinful and they become more assured that they cannot escape through further exploration.
This fills Isaac with shame and fear as depicted by his reading of the Bible in ending 12. He sees himself as a demon in the mirror, then looks over at the chest appearing sad. It’s not really meaningful whether religion was what filled Isaac with shame, embarrassment and a lack of self-acceptance, but rather it is possibly the best metaphor for one believing that he or she should be ashamed just for being human. Ending 11 is confirmed to happen after Ending 12 and it is Isaac approaching the box, flashing through all of his made-up characters, then climbing in. It’s important to note ??? is not flashed though because it is a symbol of the real world and not an actual part of Isaac’s created mindtrip; ignoring it is part of his denial.
