
Dark Interval.. I got to play this recently. Solid, wish it was longer, but very interesting. It's not terribly fun but I think that's because it's authentic to beta HL2 as it was before the major revisions that brought to the concept retail HL2 uses. It shows precisely *why* the developers chose not to go in this direction. It's long, meandering, a bit tedious, dark and depressing. The atmosphere is ceaselessly oppressive, and that's just not as fun.