The parallel is that Pascal's Wager is an argument from fear. The Pascal in the game introduces his children to the concept of fear in the same way that the real Pascal proposes we should fear the consequences of disbelief in an unknown. Yoko taro then shows us what he believes to be outcome of the philosophy that underpins Pascal's Wager when the children destroy themselves out of fear of events that do not come to pass. They destroy themselves out of that fear of the unknown.
The parallel is that Pascal's Wager is an argument from fear. The Pascal in the game introduces his children to the concept of fear in the same way that the real Pascal proposes we should fear the consequences of disbelief in an unknown. Yoko taro then shows us what he believes to be outcome of the philosophy that underpins Pascal's Wager when the children destroy themselves out of fear of events that do not come to pass. They destroy themselves out of that fear of the unknown.