I got the original HalfLife game that was made for Windows 98 & had to install update patches so it would play on XP.
It was a fun game but the graphics aren't anything near what they are in HL2 Episode Two!!!
Now, if they can remake the game using the improved & updated Steam engine with Orange box (They said they are) that would be very cool & I would add it to my HL collection.

From the Screenshots & Trailer it looks great...now if they ever get it finished...this is yet to be seen as it will be a TON of work involved.