You can get all Fallout games (except Fallout 4) for $20 at the moment

Fallout New Vegas 3

Yes, Fallout 4 is dominating the agenda this week, but the previous Fallout games still exist, you know. Most have already bought the original isometric Fallouts at a heavily reduced price, but if you haven't, then here's a good deal: Bundle Stars is selling all Fallout games for just over US$20.

The bundle includes the original Fallout, Fallout 2, Fallout Tactics, Fallout 3 and Fallout: New Vegas with all associated DLC. You end up saving around forty bucks, but also probably four years of your life, so proceed with care.