Thinking of getting these in the summer sale, but I'm not really sure about them. Are they completely different, or is Terran War Pack some kind of "ultimate" X3 version, with everything from Reunion plus more? TWP's higher price would seem to support the "ultimate edition" idea, but I'm not sure. My only experience with the X series was playing Beyond the Frontier a really long time ago, and I haven't followed it since then, so I'd appreciate some clarification.

They are different games, Terran War Pack is X3 Terran Conflict plus the X3 Albion Prelude DLC.

The '3' is there to tell you it is the, more or less, same engine though updated a bit and added to.

So the "complete X3 experience" would require getting both of them, then. All right. Thanks, guys, I appreciate the help.

Some earlier discussion: https://www.gog.com/forum/x_series/x3_reunion_or_x3terran_war_pack