
Strangely, you can still find Fallout, Fallout 2, and Fallout Tactics at Steam. There is no word on whether or not these titles will also be pulled from that service as they all still list Interplay as the publisher. In fact, these titles are offered at a 75% discount due to the holiday sale.
If you've been on the fence, you may want to pick them up now just in case they aren't back any time soon.
I still think it would've been funny if everyone noticed their recently acquired Fallout games disappear from their accounts though. "I just got this! How did I lose it?!"
(Hopefully future giveaways will be on better circumstances, like the free games given when registering an account for example.)