Neverwinter Nights

[BobTheJanitor]

I've just got the basic, original NWN. I've had trouble trying to play games with people who have later expansions installed, so I may not be able to join in now that I think of it.

[Sydney Carton]

You can play with anyone with any other expansion, as long as everyone's patched up and you're not playing a module built with the new expansions' toolsets.  So you can play any module built prior to SoU, the only difference will be that everyone else will have access to prestige classes and such that you won't.  Of course, the caveat is that you'll be hard pressed to find a newer module built without at least SoU, if not HotU, but there are decent older modules.  I can't imagine wanting to play through the original scenario, though, hehe.

One other option for everyone are PWs, which are sort of like Medium-MORPGs.  The problem with that is that nearly every one of them require both expansions at this point.

[Cold-NiTe]

At my neighboring Best Buy they had the complete set, expansions and all for $40, it may have been some kind of sale though.

But I am gonna wait and get BF Vietnam anyway.