Do you read finance or sales & trading job descriptions which claim no "finance background required"; and wonder what could possibly be going on here. Your gut feeling suspicions are right on target - either it is a research job involving reading academic papers and summarizing them for a talk at an upcoming (hopefully) fun conference; or else worse, it is a bait-&-switch con job, to sell you on a coding job.
But you're neither in CS, because you find video games...
Vague course titles or worse generic course titles are a safe bet, for when the bad reviews pour in from poor students who have just wasted a semester of their salad life and untold dollars, only to learn well not much.
Computational refers to the methodology that I'll be using, namely Hidden Markov Models, Arch, Garch, and a few of their relatives. In other words we will not amuse ourselves with proofs or critiques of the abstract but rather license and install, MATHEMATICA, R, STREAMBASE, and perhaps a little C for the intrepid.