for the classic games, Steam has a bundle: https://store.steampowered.com/sub/45615/ - it includes Tactics (which is a terrible game), but it's kinda like getting it for free if you buy the other two. =)

FO1 is great, still one of my faves XD. FO2 is considerably longer - tons and tons of quests and ways to entirely screw up. like 'oh, you didn't grab that rando item back in that location from 7 quests ago? best run back to the location to get the thing so you can finish THIS quest'. =)