Buddhist chant from video game
I puzzled out a similar problem on the Thai Angulimali soundtrack which did turn out to be Pali. 

As you say, there seems to be two chants; one at the beginning, and another at 1:44. The on at the beginning sounds familiar; I bet it's Tibetan, maybe even Om Mani Padme Hum. I'm pretty sure you'd hear it on one of the movies about Tibetan Buddhism like Kundhun, Little Buddha, etc.

The second one sounds vaguely Indic, but nothing rings a bell. The best I can sound it out to be is something like:

asabha savana namehe

MobyGames (linked from Wikipedia) says a man named Peter McConnell did the music for Afterlife. His email is info@petermc.com. Probably the best lead.