Absolutely top-notch!!!
You should join Studio MDHR as an animator.

I did not expect that ending at all.

0:57 made me jump so bad.
Nice job on the animation, btw! :P

Pretty awesome!

There's a glitch you might want to fix though.

I placed the 3 discs into the spaces, and then took the letters. But when I clicked above the disc spaces again and clicked on the storage space, my letters disappeared from my inventory and the glitched letters flew from the storage space all the way to the right, off-screen.

Therefore, I have no letters, thus rendering the game impossible to complete unless I restart.

I don't get it.

It's actually pretty addicting!
However, I didn't really know what I was supposed to do at first. You should consider adding a tutorial or something at the start.
Other that that, not bad.