He could start a whole chain of Autistic games - games that have minimal storyline and concentrate heavily on the background and trying to find odd bugs and strange limitations to how fast you can go or how high up you can travel.
In particle physics, a system of units in which the speed of light in a vacuum c and the reduced Planck constant ħ are dimensionless and equal to unity is widely used: c = ħ = 1. In these units, both distances and times are expressed in inverse energy units (while energy and mass are expressed in the same units