Edit: Discovered that Lost Coast is just an "experience" over a deleted level, with the developers comments, already ended in 20 minutes, the Half Life series is ending too fast. Edit 2: Beated the Episode One, oh crap, I'm losing my mind, I don't want it to end, but it's only one more episode, I'm freaking out.
I treat Episode 1 like the epilogue for Half Life 2, and Episode 2 as the prologue for Half Life 3. You cant have a prologue to something that will not exist. be true, but that's never going to break the faith of the church of Gaben. Episode 2 is pretty nuts. Return as Gordon Freeman in a new VR adventure to City 17 and beyond. Deal with the consequences of your actions in Half-Life 2 with this community-made adaptation of Episode One to glorious roomscale Virtual Reality! 4cX8Ht.