An RPG with the words fusion is usually a good sign for a vast amount of customization. Though this usually only applies to weapons, it will be quite different in Shin Megami Tensei: Devil Survivor Overclocked. That is because rather than having to fuse a sword or piece of armor, you will be able to fuse together demons. The demons can be fused together to create stronger and maybe even cooler looking demons.
Besides revealing how demon fusion works, the new trailer released by Atlus also details the auction system in Devil Survivor Overclocked by showing it in action. It appears you can sell demons online through the game Wi-Fi system, though more information will have to be revealed on this feature in the next couple of weeks before the title is released on the 3DS.