Voyage to the earth's core

This is the game I made for the GMC jam#4, May 2017.
It's a 72 hours friendly competition. The theme was: Voyage
 I only had about 6 hours to work on but I upgraded it later, here it is.
It's a simple 60 seconds game about digging down to the core. Try hard
to be on the highscore table.

Download current version