Miracle Cube Simulator (updated interface)!

This seems pretty interesting. I think you should add the following:

• a counter that shows the number of cubes used
  
• the ability to select beginning rank
  
• toggle animation
  

I'll probably use this quite a bit once you're finished with it, thanks for making it.

I want to have an inventory below the strengthen window with a few slots. The inventory window will include some equips, the used NX and perhaps the used cubes.

What do you mean by toggling an animation, though? Is this the scroll effect above the characters head? I will most likely include sounds, too.