I ran across a curious flash game featuring ME-tan defragmenting a hard drive the other day.
The point is to line up the “blocks of data” so they match colors horizontally. If you didn’t figure out the keys already, arrow keys are used to move the cursors that outline the blocks, z is to swap blocks that are outlined, x is used to “slide” all of the visible blocks to the side, and spacebar is to add more blocks to the bottom.
I started to play a bit, but then I realized I do this on a regular basis anyway…