http://www.oddworld.com/?p=545 This was posted a little over a quarter of a year ago, and yet we still only have half of the games here. Any particular reason why it's release on GOG has been delayed so long?

Last time this came up I believe gog said they had the titles but they hadn't completed their testing process. I would expect (hope) that these games will be making their appearance in this gap between now and the next wave of EA releases in August.

Here's the previous thread:

http://www.gog.com/en/forum/general/oddboxx_titles_coming_to_gog_this_week

I'm pretty sure from what I've heard that the PC releases of the latter two games of the Oddboxx have presumably failed the GoG team's testing routine quite spectacularly. :P

They were released on Steam and according to the forums it was not a smooth launch. ;)

It was a horrible launch. I received a code for the Oddboxx for review. Two of the four games were unplayable for 2-3 weeks. They received multiple patches that made them worthwhile but man was it a rough launch.

I'm also not sure that the two "new" entries for PC are considered "good old games" yet since they were just released on PC a few months ago. You're better off purchasing them on another digital distribution service than waiting for them here.