That's where abstraction and specialization comes into play. After defining your algorithm for independent use, specialize and optimize it to exploit current or future hardware. This gives you a fallback for calculation, and extremely enhanced performance for the life and support of said hardware. And, as others have pointed out, it's a stepping stone to an OpenCL implementation, eventually giving you multiple vendors to rely on.

If NVIDIA goes out of business or drops support in two years, how much more work will you have gotten done over that time? If it's any less than the cost of implementing the specialized solution, it's worth it.

Is there risk? Yes. And, it's highly mitigated with the abstracted solution and migration paths.

A game (or even a simulation, in this case) is always fictional and biased.

Even a piece based on "fact" or historical information is still, at best, a commentary on a single perspective of the event (usually that of the developing body expected to appeal to their target audience -- not to discount satire, antagonism, or other secondary aspects).

The only issue here is the marketing and, more specifically, the target audience of the game.

Properly marketed -- suggesting an 'M' rating at a minimum, and an author's full disclaimer as an indication of bias -- any 'game' is valid.

Here, here!

I'm glad to see my repeated reports to the FTC on both my cell and home phone lines may finally be addressed!

I can count a handful of times I've audibly cursed upon realizing I answered yet another of their numbers before blocking it on my various phones.

It keeps spammers away!

My home phone and cell phone both go directly to voice-mail for all non-white-listed calls (including all unrecognized/private numbers).