Fun little game, maybe a bit too fun because I didn't check upgrades at the beginning. The prestige layers feel a bit haphazardly tacked on but I do like the antimatter mechanic. I do wish mass and energy were more than currencies and had some sort of effect though like gravitation.
(Radiation may be a more suitable currency name than light, as EM waves from black holes tend not to reach into the visible spectrum- And additionally, black holes decay via hawking radiation, so it does make a bit of sense)
It reminds me of heartosis's entry with a bit more depth due to the antimatter mechanic.