Fallout requires a 90MHz pentium chip and 16MB system RAM for windows 95 (or 32MB running on DOS ~Yes it shipped with a DOS executable
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)
PC's made as early as 1994 should have no (hardware) problem with it ~you could probably port it to a cell phone.
It needs no accelerator, and only uses 229 colors.
Given the cost of maintaining a 1995 Pentium, (and that it might sell for less than what GOG would charge you for the game)... I think its a non-issue no?
Anyone that wanted to play could pick up a $20 PC from a thrift shop and play the regular game. :shrug:
I've done it myself with other games...