Didn’t realize Dirt 3 had been de-listed too. I have 1 and 3 on Steam, and 2 saved on a HDD somewhere because I bought it from Direct2Drive back in the day.
Dirt Rally is the only one I still care about though, and spent more time on it than 1-3 combined. Never cared about X-Games or racing pickups around a track; that stuff just got in the way of rallying.