The scenario where a team can score 1 point in a game involves the most improbable of events, running backwards 97 yards into your own end zone on a 2 pt conversion attempt. Since it'll never happen in real life, the only way we can simulate it is through video games. But when did college football games actually add this most obscure of scoring possibilities?
I tried to go back as far as I could and downloaded some of the very first NCAA football games for SNES: bill walsh's college football (1994), USA college football (1996), and NCAA football (1994).
bill walsh's college football gave me 2 points for the safety
USA college football and NCAA football gave me no points and counted it as simply a failed try:
Note: I had to take 20 delay of games in NCAA football in order to accomplish a 1 point safety as it was impossible to outrun the defense from tackling me running backwards. Excellent AI mobygames!
So we've determined that no one had any clue about the 1 point safety in the 90s, especially not video game programmers.
Anecdotally, I was able to also find out that 2002 NCAA football for Sega Dreamcast counted it as a failed conversion try.
Now here is a screenshot from NCAA 2006 which came out the year after the Texas/Texas A&M 1 point safety game, still the only DI-A recorded instance of this type of scoring.
In conclusion, that game made the 1 point safety well known enough that video game programmers had to include it in the latest versions of NCAA Football, although I've been told its actual inclusion has been sporadic from year to year.