Mercury HG is a remake of the PSP puzzle game Mercury Meltdown.

For those not familiar with the 2005 title, you are given the task to move a blob of mercury to reach the finish line in the shortest amount of time possible while keeping the blob 100 percent intact. To do this, you have to tilt the board to move the blob around. You can also collect atoms on the way to unlock levels laid out like the periodic table of elements.